Answer:
Daniel Lieberman can see millions of years of human evolution at a glance. The collection of skulls on his office shelves come from chimpanzees, long-extinct humans, and modern men and women. The hollow eye sockets, ancient teeth, and empty skulls pose the same question every day: What made us different from our archaic ancestors?
Explanation:
i hope this helps.
Analyze the graphs below. Which growth model would apply to a population of squirrels arriving on a new island? Assume the squirrels have no way to leave.
A logistic growth model is most appropriate for expanding squirrel populations to new islands.
Give a brief account on logistic growth model.A logistic growth model is one that incorporates carrying capacity to show how growth slows when a population reaches a point where the amount of resources is limited. As the population grows, the organism's population reaches the carrying capacity and stays there. This is the maximum population the environment can support.
Population grows more slowly as it approaches carrying capacity (K), or the maximum population that the surrounding area can support according to the population logistic model. According to this declaration, all members of the population have equal access to resources and chances of survival.
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How do you think resistant pests will impact the future of our crop production?
Answer:
See The Explanation
Explanation:
Resistant pests are becoming an increasingly pressing issue in crop production, and they are likely to have a significant impact on the future of agriculture. Here are a few ways that resistant pests could affect crop production in the coming years:
Increased Costs: As pests become more resistant to traditional pesticides, farmers may need to use more expensive and specialized chemicals to control them. This could drive up the costs of crop production, making it more difficult for farmers to stay competitive and profitable.
Reduced Yields: Resistant pests can also cause significant damage to crops, reducing yields and quality. This can result in lower revenues for farmers and higher prices for consumers.
Environmental Impacts: The use of specialized chemicals to control resistant pests could also have negative environmental impacts, such as increased pollution and harm to non-target species. This could lead to increased regulation and public pressure on farmers to adopt more sustainable practices.
Shifts in Crop Selection: In some cases, farmers may need to shift their crop selection to varieties that are more resistant to pests. This could result in changes to the types of crops that are grown in certain regions, potentially impacting local economies and food systems.
Advancements in Pest Management: However, the challenge of resistant pests is also driving advancements in pest management techniques, such as biological control and integrated pest management. These approaches can help farmers reduce their reliance on chemical pesticides and reduce the risk of resistance.
In summary, resistant pests are likely to have a significant impact on crop production in the coming years, but the full extent of that impact remains to be seen. By adopting new pest management techniques, investing in research and development, and promoting sustainable agriculture practices, farmers can help mitigate the risks of resistant pests and continue to provide high-quality crops to consumers.
The presence of resistant pests can have a significant impact on future crop production which include Decreased crop yields, Increased reliance on alternative pest control methods, and the Development and use of new pesticides.
The impacts of resistant pests on crop production are multifaceted and can vary depending on the specific pest, crop, and geographic region.
Decreased crop yields: Resistant pests have the ability to withstand the effects of pesticides or other control measures that were previously effective. Increased reliance on alternative pest control methods: With the rise of resistant pests, farmers may need to explore and adopt alternative methods of pest control. Development and use of new pesticides: The emergence of resistant pests often necessitates the development and use of new pesticides or pest control methods. The continuous reliance on chemical pesticides alone can lead to a cycle of resistance development and pose risks to human health and the environment.Thus, future crop production may be significantly impacted by the presence of pests that are resistant, including decreased crop yields, a greater reliance on alternative pest control strategies, and the development and usage of new pesticides.
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At what temperature do the two enzymes in the graph have the same amount of activity?
The graph showing the same amount of activity is at 47 degrees, as at this temperature the enzyme has most of its affinity. An enzyme is a type of protein that catalyzes or speeds up chemical reactions in living organisms by lowering the activation energy required for the reaction to occur.
Enzymes are essential for many biochemical processes in the body, including metabolism, digestion, and DNA replication. Without enzymes, these processes would occur too slowly to sustain life. Enzymes (protein in nature most of the time) have a specific three-dimensional structure that allows them to bind to specific molecules, called substrates, in a process known as enzyme-substrate recognition.
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Which statement best describes ecosystems on Earth?
O A. Most of Earth's ecosystems are in rain forests.
B. Separate ecosystems on Earth can affect one another.
C. Desert ecosystems are the most productive ones on Earth.
о D. Earth's largest ecosystems are on land.
On Earth, several ecosystems can influence one another. Ecosystems on Earth are best characterised by this phrase. Ecosystems interact and have an impact on one another rather than being in isolation.
What one phrase best describes an ecosystem?An ecosystem is a place where various plant, animal, and other organism types live side by side in harmony with their surroundings, such as the climate and terrain.
Which of the Earth's ecosystems are named?The biosphere is the general term for all ecosystems on Earth that sustain life. Deepest tree roots, murky ocean trenches, lush rain forests, majestic mountain summits, and transitional places like this one where marine and terrestrial ecosystems meet are all included in the biosphere.
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How can individuals reduce carbon dioxide emissions
Explanation:
easy bruv, use renewable resources
order the steps through which ATP synthesis occurs during the light- dependent reactions of photosynthesis in plants
Answer:
Order the steps through which ATP synthesis occurs during the light-dependent reactions of photosynthesis in plants.
Electrons move down the electron. transport chain, releasing energy.Hydrogen ions diffuse across. the thylakoid membrane into the.Energy from the Sun ejects electrons.ATP synthase uses the energy.
2. A woman goes on Maury Povich to find out who’s the father of her baby. She has four possible men who could have fathered the baby. Use the table below to find out Who’s the
Daddy!
a. Create 4 different Punnett squares. One for each father
Name
Blood Type
Genotypes
Mother
Type A (heterozygous)
_______
Baby
Type B
______or ______
Sammy the player
Type O
_______
Guy at the club
Type AB
_______
The waiter
Type A (homozygous)
_______
The cable guy
Type B (homozygous)
_______
The Daddy is the Guy at the club.
To determine the possible father of the baby, we need to consider the blood types and genotypes of the mother, baby, and potential fathers. The mother has blood type A and is heterozygous (AO), meaning she has one A allele and one O allele. The baby has blood type B, which could be the result of inheriting a B allele from the father.
Using Punnett squares, we can determine the possible blood types and genotypes of the baby based on the blood types and genotypes of each potential father. The Punnett squares for each father are as follows:
Sammy the player:
O O
AO OO
OB OO
Guy at the club:
AB AB
AOBO AOBO
ABAB ABAB
The waiter:
AA AA
AO AA
AO AA
The cable guy:
BB BB
BO BB
BO BB
From these Punnett squares, we can see that only the Guy at the club could have fathered the baby with blood type B. This is because the Guy at the club is the only potential father who has the B allele, which could be passed on to the baby. Therefore, the Daddy is the Guy at the club.
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20 points
8. Is ecological succession best described as a progression of small changes, or one large change? Explain.
Sometimes a change to a habitat may have unexpected effects. For example, how might cutting down trees while constructing a new highway affect the populations of ospreys and fish at a nearby river?
The cutting down of trees while constructing a new highway can affect the populations of ospreys and fish at a nearby river reduces habitat fragmentation and can reduce the popullation.
What is habitat fragmentation and what causes it?Fragmentation do take place as a rsult ofhow the parts of a habitat are destroyed, which do bring about the remnats of the smaller unconnected areas it can be seen to happen naturally, as a result of fire as well as due to human activity.
Besides the direct habitat loss as a result of the road itself, the animal species, can be destroyed and the water-flow patterns, as well as pollution, can take place creating disturbance that alters the species composition .
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Which mineral resource is used to make batteries? graphite gypsum talc clay
Answer:
graphite
Explanation:
graphite is a mineral resource used to make batteries
Graphite is the mineral that is frequently utilized to create batteries. So, the correct option is A.
What is Graphite?A crystalline form of carbon that is found in nature is called graphite. Due to its special qualities, this mineral, which is exceptionally smooth and slippery, is frequently employed in a variety of applications. Due of its propensity to create a trace on paper, graphite is one of the materials that is most frequently found in pencils.
In addition to being used in pencils, graphite is also employed in lubricants, nuclear reactor moderators, batteries, and other electrical devices as electrodes. It is a good heat- and electricity-conductor and is generally chemically stable. Graphite is frequently obtained either open pit mines or underground mines and is typically found in metamorphic rocks.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Which mineral resource is used to make batteries?
graphite gypsum talc clayA combination of antibiotics and bioengineered antibodies to bacterial antigens is now being used in hospitals to treat bacterial infections. How and why does this method make bacteria become noticeable to phagocytes?
Antibodies and antibiotics can work together to combat the infection. Antibiotic alterations to the bacterial envelope prompt complement protein or targeted antibody opsonization of the pathogen or bacteria and pathogens are identified by circulating phagocytes.
What are antibiotics?Medications that either kill the bacteria or make it impossible for the germs to grow and reproduce in order to treat bacterial illnesses or infection in both people and animals.
What are phagocytes?A kind of cell in the body that can take up and absorb germs as well as other tiny cells and particles.
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chance to get brainliest!
this is earth science
Which statement describes indoor air pollution?
Smog is a common source of indoor air pollution.
Ultrafine particles are classified as indoor air pollutants.
Indoor air pollution does not affect symptoms for people with asthma.
Chemicals from industrial power plants cause indoor air pollution.
Answer:
I'm pretty sure it's answer B: Ultrafine particles are classified as indoor air pollutants.
Explanation:
Don't give me brainliest because I definitely could be wrong but that answer just makes the most sense to me
Answer:
Ultrafine particles are classified as indoor air pollutants.
In which biome do you live? Describe the plant life and climate characteristics that support your conclusion.
Answer in 3 to 4 complete sentences.
Answer:
Biome: temperate forest
The temperature varies widely from season to season with cold winters and hot, wet summers. The average yearly temperature is about 10°C. The areas in which deciduous forests are located get about 750 to 1,500 mm of precipitation spread fairly evenly throughout the year.
Refer to Figure T and the rear part of a whale and snake. Both have what appear to be a fomur and pelvis. These structures have no useful function and may imply both the whale and the snake-
may have had legs at one time. Which of the following best describes why these structures provide evidence for evolution? (15.1)
whale
Figure T
snake
The presence of vestigial structures such as the femur and pelvis in whales and snakes provides evidence for evolution because it suggests that these animals evolved from ancestors that had functional legs. The vestigial structures have no useful function in the current species, but they suggest that the structures were functional in their ancestors. This is consistent with the theory of evolution, which proposes that species change over time through the process of natural selection. The presence of vestigial structures is one of many lines of evidence that support the theory of evolution.
The slope of the trend line that represents this scenario is?
The slope of the trend line is the rate of change of the dependent variable to the rate of change of the independent variable.
What is the slope of a scatterplot?Slope describes how variable Y changes when variable X increases in size. The slope is positive if variable Y also increases; however, if variable Y decreases, the slope is negative.
The amount of "scatter" in the scatterplot is referred to as the plot's strength.
The data's rate of change is shown by the slope of the trend line. It is the ratio between the rate at which the dependent variable changed and the pace at which the independent variable changed.
The slope is a measure of the value of correlation.
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Complete question:
When finding the slope of a trend line, what does the slope mean about the data of the scatterplot
PLEASE HELP.
Read the information on page 2 of this activity. Then, follow the procedure on page 3 to model
conventional agriculture using the Resource Use and Conservation Virtual Lab. Use the
following tables to record the data you collect. (6 points)
1
Year
0
Land usage
(cropland)
Land usage
(forest)
Land usage (grassland
and wetland)
Population
A table for keep information connected with land utilization and populace in a customary horticulture model utilizing the Asset Use and Protection Virtual Lab. There are four columns: Year, Cropland, Forest, Grassland, and Wetland, and Population are all examples of land uses.
What kind of information is land use classes?Land use information alludes to how individuals use the land — whether for horticultural, sporting, private, business, or modern purposes. Land Use and Land Cover (LULC) data sets are raster (sometimes vector) files created by separating land use and land cover classes from raw satellite data.
What is the efficiency of land use?The term land use proficiency centers around the utilization of fake regions in FUAs in extent of occupants. As an action for evaluation, how much counterfeit region per capita is utilized.
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. In domestic cattle the spotting pattern of the coat can be controlled by several alleles. The Dutch
belt pattern is controlled by a dominant allele “A”. The Hereford pattern is “a1”, a solid pattern is “a2”,
and the Holstein pattern is “a”. The Dutch belt pattern is dominant to all other alleles. The Hereford
pattern is dominant to the solid and the Holstein pattern. The solid pattern is dominant to the Holstein
pattern and the Holstein pattern is recessive to all. So the dominance pattern looks like this: A>a1>a2>a.
Use this information to answer the following questions.
a. Can Holsteins produce Hereford offspring? Explain your answer.
b. Can Herefords produce solid offspring? Explain your answer.
c. Is it possible for two parents with different color patterns to have four offspring all with
different phenotypes? Explain your answer. Include a Punnett square or squares to explain
your answer.
Yes, Holsteins can produce Hereford offspring. Holsteins have the "a" allele, which is recessive to the "A" allele for the Dutch belt pattern, and the "a1" allele for the Hereford pattern.
What is allele?Alleles are different forms of the same gene. Each gene has two alleles, one inherited from each parent. Alleles can be dominant, meaning they mask the effect of the other allele, or they can be recessive, meaning they are only expressed when two recessive alleles are present. Alleles can also be codominant, meaning they each contribute to the phenotype.
a. Yes, Holsteins can produce Hereford offspring. Holsteins have the "a" allele, which is recessive to the "A" allele for the Dutch belt pattern, and the "a1" allele for the Hereford pattern. Since "A" and "a1" are both dominant alleles, the offspring of a Holstein and Hereford parent will have the Hereford pattern.
b. Yes, Herefords can produce solid offspring. Herefords have the "a1" allele, which is dominant to the "a2" allele for the solid pattern. Since "a1" is dominant to "a2", the offspring of a Hereford and solid parent will have the solid pattern.
c. Yes, it is possible for two parents with different color patterns to have four offspring all with different phenotypes. For example, if the father has a Dutch belt pattern (Aa1a2a) and the mother has a Hereford pattern (Aa1aa), the Punnett square would look like this:
Father: Aa1a2a
Mother: Aa1aa
A A Aa Aa
a a1 a1
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What is the technical term for a substance made out of one or more elements?
Answer:
In science, a substance made from two or more different elements that have been chemically joined. Compound : A substance made of two or more elements that are chemically combined in fixed amounts.
Based on the graph below, make a conclusion about the two species. Be sure to support your conclusion with evidence.
Be sure to support your conclusion with evidence and use the following words/phrases in your response:
predation
predator
prey
cycle
Complete the answer in at least four complete sentences.
Based on the graph below, it can be concluded that the populations of both the predator and prey species are connected in a cycle.
What is populations?Population is a term used to refer to a group of people or organisms that inhabit a specific area. Since populations are composed of individuals, their characteristics are determined by the characteristics of each individual in the group. Population size, density, growth rate, age structure, and gender ratio are all important characteristics to consider when studying a population. Population dynamics, which is the study of change in the characteristics of a population over time, is a field of study that is important for many reasons.
The graph shows that the prey species population rises, then falls when the predator species population rises. This pattern indicates that the two species populations are affected by one another, with the predator species preying on the prey species and the prey species being the source of the predator species' food. This cycle of predation is evident in the graph, which shows a clear relationship between the two species. The cycle of predation is an important factor in maintaining the balance of the two species populations in the environment.
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What is difference between of direct and indirect IHC methods ?
Answer:
Immunohistochemistry (IHC) is a technique used to detect specific proteins (antigens) in cells of a tissue section. There are two main methods for achieving this: direct and indirect.
In the direct method, the primary antibody used to detect the antigen of interest is directly conjugated to a label, such as an enzyme or a fluorochrome. This method is suitable for detecting highly expressed antigens and has the advantage of not requiring an additional incubation step with a secondary reagent.
In contrast, the indirect method uses an unconjugated primary antibody and a labeled secondary antibody that has been raised against the host species of the primary antibody. This method is more suitable for studies of poorly expressed antigens, as it provides signal amplification through the potential for two or more labeled secondary antibodies to bind to each primary antibody. However, the use of a secondary antibody requires additional blocking steps and controls 1.
In summary, the main difference between direct and indirect IHC methods is that direct methods use a directly labeled primary antibody while indirect methods use an unlabeled primary antibody and a labeled secondary antibody to amplify the signal.
If A+ is donated to B+, will the blood coagulate(clump)?
No, if A+ blood is donated to B+ blood, the blood should not coagulate or clump. Blood type compatibility is determined by the presence or absence of certain antigens on the surface of red blood cells, and A and B are two different types of antigens. A person with blood type A has the A antigen on their red blood cells, while a person with blood type B has the B antigen. A person with blood type AB has both A and B antigens, while a person with blood type O has neither.
In general, blood type compatibility for transfusions follows the rule that a person can receive blood from someone with the same antigen (or no antigen) as themselves. So, a person with B+ blood can receive blood from someone with B+ blood, AB+ blood, O+ blood, or B- blood. They cannot receive blood from someone with A+ blood, as the A antigen would trigger an immune response and cause the blood to clump.
~~~Harsha~~~
Identify the trophic level held by each of the organisms on the food web above. It is possible for an organism to hold two or more levels depending on what they eat.
The Levels are: Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer
The organisms are: Deer , Frog, Grass, Mouse, Eagle, Trees
The trophic level develops as every link or grade in a food web. At a trophic level, autotrophs, the manufacturers, are the first. Following that are primary and secondary consumers. The people who decompose are at the lowest trophic layer.
How many trophic levels can you find in the food web?All food chains including webs contain more than an assortment of various trophic levels. There are only four trophic levels overall principle. Many consumers consume at many trophic levels. People are the key consumers organic vegetation that includes vegetables.
What exactly is a trophic level?Microbes occupy a particular trophic position in the food web according to the source that provides their nourishment or food. The initial trophic level is made composed of the main producers, who are followed by main consumers (herbivores), main consumers (carnivores who survive on herbivores), and so on.
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Recombinant chromatids due to crossing over occurs during.
a. prophase of meiosis I.
b. the interphase preceding meiosis II.
c. the mitotic telophase.
d. fertilization.
e. the formation of somatic cells.
Prophase an of meiosis I is when recombinant chromatids are formed as a result of crossing over. Homologous chromosomes connect and can exchange genetic material through a process known as crossing over during prophase I of meiosis.
Recombinant chromatids, which combine genetic material from the parent chromosomes, may arise as a result of this. This is a significant source of genetic diversity and adds to the diversity of the progeny obtained through sexual reproduction.
Recombinant chromatids are chromosomes that have undergone a process called crossing over, which occurs during meiosis. Crossing over involves the exchange of genetic material between homologous chromosomes, resulting in the formation of recombinant chromatids that contain a mixture of genetic information from the two parent chromosomes. This process contributes to genetic diversity by creating new combinations of alleles in the offspring.
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The water molecule is a polar molecule. A water molecule is polar because
The electrons are shared equally
Oxygen has a stronger attraction for electrons than hydrogen
It is very cold
Hydrogen atoms have a stronger attraction for electrons than oxygen
The correct answer is: "B. Oxygen has a stronger attraction for electrons than hydrogen."
What are polar molecules?A water molecule is polar because it has a bent shape and an unequal sharing of electrons between the oxygen and hydrogen atoms.
Oxygen has a stronger electronegativity (ability to attract electrons) than hydrogen, which means it attracts the shared electrons in the covalent bond between the two atoms more strongly. As a result, oxygen has a partial negative charge (δ-) and hydrogen has a partial positive charge (δ+).
This separation of charges makes the water molecule polar, with a slightly negative end and a slightly positive end. This polarity allows water molecules to interact with each other through hydrogen bonding and gives water its unique properties, such as its high boiling point, surface tension, and solvent abilities.
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What experimental evidences supports the fluid mosaic model of biomembranes?
Answer:
The fluid mosaic model of the plasma membrane, refers to the plasma membrane as a fluid combination of phospholipids, cholesterol, and proteins. The carbohydrates attached to lipids (glycolipids) and to proteins (glycoproteins) extend from the outward-facing surface of the membrane.The fluid property of these membranes were determined through observation in labeling experiments, x-ray diffraction and calorimetry. These studies and recent advances in fluorescence microscopy and structural biology validates the fluid mosaic model.
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pyrethroid pesticides exert their toxicity in the form of
In what way is a decomposing log in a forest a microhabitat?
A
B
C
D
It supports a distinct population of organisms, but the forest houses the log its
It provides camouflage for particular organisms to protect them from predators
It decomposes into organic matter that enriches the soil.
It is a large community of organisms that occupy a major habitat.
A microhabitat is an area within a larger habitat that is smaller in size, has certain environmental characteristics, and supports a particular population of species.
What is a microhabitat, exactly?An organism lives in a considerably smaller environment known as a microhabitat. Microhabitats are typically used to describe the environments in which tiny animals, such as worms or beetles, reside.
What does a microhabitat for an organism consist of?A small area that differs in some manner from the habitat around it is called a microhabitat. It's possible for unique species to live there that are absent from the surrounding area. Unfortunately, a number of habitats are in jeopardy because of weather extremes, pollution, or deforestation.
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The table lists fossil fuel production as a percentage of total energy production for
selected years. A linear regression model for this data is
y=-0.36x+96.4
where x represents years after 1960 and y represents the corresponding percentage of
oil imports.
Year
1960
1970
1980
1990
2000
Fossil Fuel Production
Production (%)
88588
96
95
87
83
GITTE
(A Interpret the slope of the model.
The rate of change of the percentage of oil imports with respect to time is
per year.
(B) Use the model to predict fossil fuel production in 2010.
In 2010 fossil fuel production as a percentage of total production will be about
(Round to one decimal place as needed.)
(C) Use the model to estimate the year in which fossil fuel production will fall
below 70% of total energy production.
In the year fossil fuel production is expected to fall below 70% of total energy
production.
(Round up to the nearest year.)
In the table of fossil fuel production, (A) The slope of the model is -0.36, indicating a decrease of 0.36% in the percentage of fossil fuel production. (B) Fossil fuel production in 2010: 78.4%. (C) Year fossil fuel production falls below 70%: 2033.
(A) The slope of the model is -0.36, which means that for every year after 1960, there is a decrease of 0.36% in the percentage of fossil fuel production as a share of total energy production. This indicates a declining trend in the reliance on fossil fuels for energy production over time.
(B) To predict fossil fuel production in 2010, we need to substitute x=50 (since 2010 is 50 years after 1960) into the regression equation:
y=-0.36x+96.4
y=-0.36(50)+96.4
y=78.4
Therefore, in 2010, fossil fuel production as a percentage of total production is predicted to be about 78.4%.
(C) To estimate the year in which fossil fuel production will fall below 70% of total energy production, we need to solve for x when y=70:
70=-0.36x+96.4
-0.36x=-26.4
x=73.3
So the year fossil fuel production is expected to fall below 70% of total energy production is 73 years after 1960, which is 2033 (since 1960+73=2033). We round up to the nearest year.
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4.
What is the larva of a butterfly called?
A. nymph
B. wriggle
-
C. maggot
D. caterpillar
Answer:
D. caterpillar
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A scientist is studying how the roots of plants absorb water and transport it to the rest of the plant. The scientist examines each structure in the roots and observes how those parts fit together to make an inference about how roots function.Which type of scientific thinking is the scientist using to make this inference?
The type of scientific thinking the scientist is using to make this inference is deductive reasoning.
What is deductive reasoning?
Deductive reasoning is a logical process in which a conclusion is drawn from premises or previously known information.
In this case, the scientist is examining the structures of the roots and using this information to make a conclusion about how roots function in absorbing and transporting water to the rest of the plant.
The scientist is using deductive reasoning to make an inference based on known information, which is a common approach in the scientific method.
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