Sahana used to use fertilizer frequently on her farm in the United States, but now she uses less fertilizer. This most likely indicate that She has a harder time obtaining fertilizer now than in the past.
Fertilizers that are used for agriculture purpose are significant source of nutrient for plants , but when it is used in higher quantity it can cause water pollution. fertilizers reduces quantity of oxygen in the water that can make survival of marine life very difficult .
Fertilizers used in agriculture are main source of nutrient pollution to water. Components like nitrogen and phosphorus escape from agricultural fields and collects in water bodies becomes the largest sources of pollution to coastal zones across the United States.
Hence, A is correct option
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The ability to roll your tongue is caused by a dominant gene (R). If you can't roll your
tongue, you are a non-roller and must be homozygous recessive (rr). If our trait of interest
is INABILITY to roll your tongue, in a Pedigree, A homozygous dominant female is
represented
by a(n):
A)Unfilled square
B)Unfilled circle
C)filled square
D)filled circle
The ability to roll the tongue is due to a dominant gene (R). If you cannot roll your tongue, you must not have curly hair and be homozygous recessive (RR). If the trait we're interested in is the inability to roll the tongue, then homozygous dominant females are represented by (n):D) filled circles on the pedigree.
Homozygous for a particular gene means that you inherited the same mutation. This is another heterozygous genotype in which the allele is specific. People with recessive tendencies, such as blue eyes or red hair, are consistently homozygous for this gene. If the two mutations are different, they are heterozygous for that gene.
For example, being heterozygous for hair color means having one red hair allele and one brown hair allele. The relationship between the two alleles affects the changes expressed. Homozygous and heterozygous are phrases that can be used to describe pairs of alleles. People who carry the same allele (RR or rr) are called homozygous. Just as a human organism with a unique allele (Rr) is said to be heterozygous.
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2) State three economic importance and mode of infection of cestode and trematode
Both Cestode and trematode have mode of infection as consumption of contaminated food. Cestode is acquired by ingestion of meat from hosts and trematode is via contaminated food like raw fish, crustaceans, etc.
What are Cestode’s economic implications?These tapeworms are the least helpful creatures. But these tapeworms also have a very limited economic impact. These tapeworms contribute to the harvesting of soil’s increased fertility through a natural process. These worms function as organic fertilizers.
What is the Cestode’s mode of infection?Meat from intermediate hosts is frequently consumed in order to acquire adult cestodes. Eggs of origin can cause an extraintestinal infection with larvae. Identification of eggs and segments (proglottids) in feces is used to diagnose an adult cestode infection.
What method does a trematode use to spread infection?Humans become infected by foodborne trematodes after eating tainted food (raw fish, crustaceans or vegetables. Infection can induce severe liver and lung illness, which together are thought to account for 2 million years of life lost to disability and death globally each year.
What distinguishes a trematode from a cestode?Cestodes lack a digestive tract and have a tape-like, segmented body. Trematodes have an imperfect digestive system and resemble leaves. Cestodes typically need two hosts, whereas trematodes typically need three, to complete their life cycles.
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Engineers who work for a museum would like to make a model of a blue
whale using a scale of 1:20. If a blue whale averages 20 m in length, how long
will the model be?
O A. 1 m
OB. 10 m
OC. 400 m
D. 20 m
Need assistance on these question, any help is appreciated!
1. The human papillomavirus (HPV) causes many cases of cervical cancer and oropharyngeal cancer. There is a vaccine that protects against the strain that causes cervical cancer, but it is not certain that same vaccine protects against oropharyngeal cancers. What experiments could medical professionals perform to best determine the effectiveness against oropharyngeal cancers?
A) Randomly assign a number of young adults to either a group to be vaccinated or a non-vaccinated group and record the incidence of cervical or oropharyngeal cancers in each.
B) Compare the incidence of cervical and oropharyngeal cancers in people who have been vaccinated and those who chose not to be vaccinated.
C) Vaccinate many people and compare the incidence of cervical cancers to the incidence of oropharyngeal cancers.
D) Compare the incidence of cervical cancers and oropharyngeal cancers in the general population.
4. The calcium that triggers muscle contraction is stored in the
A) motor neuron.
B) plasma membrane of cells.
C) endoplasmic reticulum.
D) mitochondria.
Any help is appreciated, thanks!
1.) The experiment that the medical professionals would perform to best determine the effectiveness against oropharyngeal cancers is to compare the incidence of cervical and oropharyngeal cancers in people who have been vaccinated and those who chose not to be vaccinated. That is option B
4.) The calcium that triggers muscle contraction is stored in the endoplasmic reticulum. That is option C.
What is human papillomavirus (HPV)?The human papillomavirus (HPV) us a type of virus that belongs to the family non-enveloped DNA viruses that are being transmitted during intercourse.
The human papilloma virus is known to be the main cause of cervical cancer and oropharyngeal cancer which can be prevented through the use of vaccines.
To check the effectiveness of these vaccines, two variables are used:
Dependent variables: This is the set of individuals that has received vaccination against the human papillomavirus (HPV).Independent variables: This si the set of individuals that has chosen not to receive a vaccine against the human papillomavirus (HPV).Therefore the effectiveness of the vaccine is being observed when the incidence of cervical and oropharyngeal cancers in people who have been vaccinated and those who chose not to be vaccinated are compared.
The calcium that triggers muscle contraction is stored in the specialized smooth endoplasmic reticulum called the sarcoplasmic reticulum.
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What is it about Neasles that requires a high vaccination rate to prevent deaths?
Need this answer quick as possible
a. Combination of alleles in BbEE = BE and bE
b. Combination of alelles in BBee = Be only
c. Offspring's genotype = BBEe and BbEe
d. Offspring's phenotype = brown and free earlobes
e. The probabilities are 100%, 0, 0, and 0 respectively
Dihybrid crossingThe man's genotype is BbEE while the woman's genotype is BBee.
Combination of alleles in BbEE = BE, BE, bE, and bE
Combination of alleles in BBee = Be, Be, Be, and Be
Crossing the man and the woman:
BbEE x BBee (see the Punnet's square attached)
Offspring's Gentoytpes:
BBEe BbEeBased on the assumption that brown and free earlobes are dominant, the phenotype of all of the offspring is brown and free earlobes.
Probability of brown and free earlobes = 100%Probability of brown and attached earlobes = 0Probability of blonde and free earlobes = 0Probability of blonde and attached earlobes = 0More on dihybrid crosses can be found here: https://brainly.com/question/1185199
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14.
List of Terms:
A) Asia
B) Africa
Europe
North America
America
South
Middle East
3启面正西至395
1
15
G
Atlantic Ocean
H) Pacific Ocean
D
Indian Ocean
Southern Ocean
Mediterranean
Sea
16
18.
GLOBAL MAP
20
21.
19
17
22.
23.
24
25
Answer:
g
Explanation:
Which would best model the motion of P waves?
Answer:
pulling one end of a spring and releasing itIf a tractor has a mass of 234 what is the acceleration?
The acceleration of the tractor is a = F/234.
How to find acceleration?Newton's second law of motion states that an object's acceleration is equal to its mass divided by the net force acting on it, or a = F m.
When an object's mass and the net force acting on it are known, its acceleration can be calculated using this equation for acceleration.
The SI units for acceleration are m/s2, meters per second squared, or meters per second per second, which expresses the change in velocity in meters per second over a period of time.
There is a different relationship between mass and acceleration. The relationship is inverse.
In an inverse connection, one variable rises as the other one falls.
An item will accelerate with a given force less slowly the more mass it has.
a = F/m
a = F/234
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An organism's ability to maintain a constant body temperature is due to:
A. The hydrogen bond between water molecules.
B. The hydrogen bond between water molecules and the amount of heat that must be
absorbed to change its temperature by one degree Celsius.
C. Water has a high heat of vaporization which explains this ability to maintain a
constant body temperature.
(need help asap. thank u so much)
Answer:
B
Explanation:
water has high specific heat value
Even if the density seems to be altering the effect of temperature, the degree of hydrogen bonding decreases as the temperature rises. Thus, option B is correct.
What role of hydrogen bond to maintain body temperature?The movement of molecules, or their kinetic energy, is measured by temperature. The temperature rises as the motion and energy levels rise.
The body's water plays a crucial role as a thermoregulator, controlling body temperature by assisting in heat dissipation.
When the body becomes too hot, water is lost through sweat, and heat is removed from the body when this sweat evaporates off the skin's surface.
Therefore, The hydrogen bond between water molecules and the amount of heat that must be absorbed to change its temperature by one degree Celsius.
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Which organism breaks down dead and dying waste in an ecosystem?
A. herbivore
B. detritivore
C. omnivore
Which of the following is following mechanisms of evolution is associated with reproductive success?
Bottle neck effect
Natural selection
Mutation
Founder Effect
Natural selection is the most important mechanism of evolution associated with reproductive success (Option 2).
What is natural selection?Natural selection is the main evolutionary mechanism by which species adapt to changes in environmental conditions. This process (natural selection) is based on the differential survival and reproduction rate of organisms that better fit environmental conditions.
Therefore, we can conclude that natural selection represents the main evolutionary process for which a species can survive and differentially reproduce in a given environment, thereby confirming an adaptive advantage to the certain individuals in a population in nature
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Review research and related literature on immigrant populations in the rural/ global environment
The impact of immigrant population in the rural and global environment is degradation in human ecology.
What is immigrant population and how the rural area and global environment are effected by it?The population that are migrated from the native place to the place where the population is either sent or migrated for some reason.There are lot of problems showed by the immigrant population as in the context of human ecology.Human ecology is getting disturbed by this migration as the population is getting more in rural regions of our country in compare to urban areas.Poor is getting poor and rich getting richer, to maintain the sustainable balance in the environment , it should be taken into concern.To know more about population visit:
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Over the last 540 million years, icecaps covered at least one of the Earth’s poles during three intervals. what are those 3?
The fluctuation in the time and intensity of Light is the primary cause of the Ice Age, or the prolonged period of harsh winter. Because the sun's light has such a strong impact on the atmosphere and general environment of the earth's surface.
After a short period of time, the Andean-Saharan cold age (460 to 430 million years ago) led to the widespread extinction of organisms. The majority of the earth's surface was covered by vegetation. As it was also stated that the subsequent ice age was brought on by this large amount of plants. As it round the earth's poles.
The Karoo Ice Age, which lasted from 360 to 260 million years ago, functioned quite similarly to the present.
We are currently experiencing this ice age, which started when Antarctica froze over 14 million years ago. because ice caps cover the earth's poles.
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all of the following are benefits of establishing a territory except
All of the following are benefits of establishing a territory except the "owner of the territory has exclusive rights to the food found there and is denoted as option A.
What is a Territory?This is referred to as an area of land, sea etc or a geographical area as a whole which is controlled by someone or may be connected to a country, persons, or animal.
A territory comprises of different types of different types of organisms and it reduces competition fro resources such as nests as a result of lesser organisms being present in the area due to territorial demarcation and differences.
The owner of the territory does not have exclusive rights to the food found there and has to work for it or follow due processes in getting it which is the reason why option A was chosen.
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The options are:
The "owner of the territory has exclusive rights to the food found there.Territory provides better protection from environmental factors such as extreme temperature or drought.Competition for nesting sites is reduced.There is some degree of safety afforded to the young raised thereSpiders, scorpions, and ticks belong to the class:
a. Isoptera.
c. Chordata.
b. Crustacea.
d. Arachnida.
Please select the best answer from the choices provided
A
B
C
D
Answer:
D. Arachnida
Explanation:
Each of these specimens have 8 joint-legs.
The table below shows three enzymes found in the human body and the pH of their locations.
Enzyme Body part pH
Ptyalin Mouth 6.5 - 7
Pepsin Stomach 1.0 - 3.0
Trypsin Small intestine 7.5 - 9.0
How will the activity of pepsin change after it moves with the food from the stomach to the small intestine?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
It will increase as the pH increases.
(Choice B)
B
It will slow down because the environment is too basic.
(Choice C)
C
It will decrease because the pH of the small intestine is similar to that of the stomach.
(Choice D)
D
It will adapt to the new environment and continue to work at the same rate.
B. It will slow down because the environment is too basic.
As the food move from the stomach to the small intestine the activity of pepsin will slow down because the environment is too basic.
Pepsin- Pepsin is a stomach digestive enzyme used to break down proteins in food that has been consumed. Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen. The stomach's lining's parietal cells release hydrochloric acid, which reduces the pH of a stomach.
Parietal cell- The biggest cells in such glands are called parietal cells, and they are found inside the fundus & body of the stomach. They develop from immature progenitor cells inside the gland isthmus, travel upward into the pit area, and finally migrate downward toward the gland base.
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The symbiotic relationship
between a flower and a bee is...
A. parasitic.
B. mutualism.
C. commesalism.
Can someone help fill this table out
The first line non specific defence = skin, mucus, saliva, Normal flora, mucosal membrane, cilia, sebum, sweat, fever.
The second line non-specific defence= eosinophils, complement, macrophages, interferon(IFN), IL-1, phagocytosis, neutrophils and basophils.
The third line non-specific defence = B-cells, Th1 CD4+ T cells, IgA, IgE, IgG, Th2 CD4+ T cells, CD8+ cytotoxic T cells and IgM.
What is immune line of defence?The immune line of defence is defined as the three basic means that is being used by the body to fight and prevent the entry of foreign organisms into the human body.
The first line of non specific defence with their various functions include the following:Skin: protects underlying internal organs of the body.
Mucus: provides lubrication
Saliva: contains lysozyme that kills microorganisms in food.
Normal flora: fights against invading microorganisms.
Mucosal membrane: lubricates and protects underlying organs.
Cilia: helps to remove unwanted substances from the body to the exterior.
The second line non-specific defence:Eosinophils: white blood cell the fights infection.
Complement: they opsonize pathogens and induce a series of inflammatory responses
macrophages: This is a phagocyte.
interferon(IFN): flights against opsonized microorganisms.
IL-1: flights against opsonized microorganisms.
phagocytosis: removal of microorganisms through engulfing.
Neutrophils: white blood cell the fights infection.
Basophils: white blood cell the fights infection.
The third line non-specific defence:These are made up of cells that has been produced towards the elimination of a particular specific antigen of a microorganism. They include the following:B-cells, Th1 CD4+ T cells, IgA, IgE, IgG, Th2 CD4+ T cells, CD8+ cytotoxic T cells and IgM.
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Will Give Brainiest.
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation
Answer:competition
Explanation:
Which
process IS responsible for causing menstruation?
A.
breakdown of the corpus luteum
fertilization of the egg
implantation of the egg in the endometrium
D.
rupture of a follicle
in the ovary
® E.
repair of the endometrial lining
Answer:
e
Explanation:
Answer:
d. rupture of a follicle in the ovary
Explanation:
Specialized sweat glands associated with the production of earwarx are known as
_____ glands
Specialized sweat glands associated with the production of earwax are known as ceruminous glands.
What is ceruminous gland and how does it produce wax?Ceruminous glands are the glands responsible for the production of ear wax in the ear.Ceruminous glands are present in the external auditory meatus of the middle ear and is responsible for the production of wax.Ceruminous glands does the job along with sebaceous glands .Though the answer to the question could be simply sebaceous gland but it is ceruminous gland along with sebaceous gland .The area in the outer ear canal have these glands producing ear wax which is natural phenomena.Along with it the apocrine glands are also responsible for wax and sweat.To know more about sweat glands visit :
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In the experiment shown below, if the temperature of the room rose, what would happen to the time taken for the litmus paper to turn blue?
The time taken will be more for the litmus paper to change its color from red to blue.
What is the use of litmus paper?
An inspector can measure the acidity or basicity of a solution by using litmus paper, which turns red at pH levels below 5 and blue at pH levels above 8. Using litmus paper, which compares minute color variations to a color chart to identify pH levels, allows for more accurate pH determinations.
The rise in temperatures favors the acidic pH of the litmus paper. A solution's molecular vibrations increase as its temperature rises, which causes the solution to ionize and produce H+ ions. Acidic behavior increases with the amount of H+ ions. The pH level of the solution alters as a result of temperature variations. As a result, the pH drops as the temperature rises.
Hence, the litmus paper takes more time to turn blue in color due to the temperature rise.
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The correct answer is it will take some more extra time for litmus paper to turn blue.
How pH affects with temperature?
pH decreases with increase in temperature.
• It means temperature and pH value both are inversely proportion.
• Neutral is 7. Less than 7 of pH value it is acidic and more than 7 then it implies it is basic.
• To support our answer added one image for illustration below
From above table we can conclude as temperature grows pH value will decrease.
Hence, it will take some more time for litmus paper to turn blue.
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Which term best describes the change from more light-colored moths to more dark-colored moths?
Evolution describes the change from more light-colored moths to more dark-colored moths.
Evolution- Changes in heritable traits—an organism's hereditary characteristics—are the means through which organisms evolve. For instance, eye color is a heritable feature in humans, and a person may get the "brown-eye trait" through one of their parents.
Therefore, evolutionary biology enables us to understand not only how and why species have evolved into the forms they have, but also the processes that are currently modifying or changing them. A characteristic of evolution which is becoming more and more crucial in terms of the scientific input to societal challenges is the ability to adapt to change.
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What is soil pollution?
A. Pollutants of any kind that end up in the soil and
affect plants' ability to grow.
B. Pollutants that end up in the air from plants in
polluted soil.
C. Pollutants in the soil that evaporate into the air.
D. Pollutants that come out of soil into water.
Answer: A
Explanation: Soil pollution is defined as the presence of toxic chemicals (pollutants or contaminants) in soil, in high enough concentrations to pose a risk to human health and/or the ecosystem. In the case of contaminants which occur naturally in soil, even when their levels are not high enough to pose a risk, soil pollution is still said to occur if the levels of the contaminants in soil exceed the levels that should naturally be present. Soil pollution affects plants, animals and humans alike. While anyone is susceptible to soil pollution, soil pollution effects may vary based on age, general health status and other factors, such as the type of pollutant or contaminant inhaled or ingested. It mainly affect's the plants ability to grow.
What is the meaning of life and why do we live
In my mind the meaning of life is just to have fun and live it to the fullest, and for why do we live, well if your asking like what created us or how we came to be that I don't know but if your asking why to keep going then I'd say just for the shower thrill of not knowing what will happen tomorrow, could be a normal day, could be a bad one, and heck you could end up getting $1mil, you just never know
Pls help me all u have to do is tell me what is wrong in the cell that is causing this to happen
Plants would not able to grow nutrients, small molecules would able to move through plasma membranes
Why are my plants not developing quickly?either too little or too much fertiliser is added:
The soil eventually becomes deficient in nutrients as a result of the plant absorbing the earth's nutrients over time. The rate of development may be slowed down if fertilisers (natural or organic) are not occasionally provided.
Proteins will not be transported through active trantransportsport , hypertonic condition when too much water in the cell and cause it burst, The dyeing of cells called necrosis , only glucose is converted into food source .
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I need help with this please
The human body have an estimated amount of 600 to 650 muscles. There are three main types of muscles (skeletal, smooth and cardiac). Therefore, the correct alternative is the one with the number 650.
The enzymatic process illustrated here shows which kind of reaction?
This image illustrates an Anabolic process.
What is Anabolism?The group of metabolic mechanisms known as anabolism create molecules out of smaller building blocks. These processes, commonly referred to as endergonic reactions, demand energy. In contrast to catabolism, which is the breakdown process, anabolism is the process of constructing. Usually, anabolism and biosynthesis are used interchangeably.Catabolism, in which big molecules are disassembled into smaller components and subsequently consumed in cellular respiration, fuels anabolism. Adenosine triphosphate is broken down to power a variety of anabolic activities (ATP).Organs and tissues are built through anabolic processes. These processes result in the development, differentiation, and expansion of cells as well as a rise in body size. The development and mineralization of bone and increases in muscle mass are two examples of anabolic processes.To learn more about Anabolism, refer to:
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Which of the following refers to the brightly colored parts of the plant located just inside the sepal?
stomata
seeds
carpel
petals
The bright-colored parts of the plant located just inside the sepal are petals. The correct option is d.
What are petals?Petals are the bright and different-colored and designer parts of a plant. They are present in the flower. Petals are the attractive part of the plant and their beautiful color attracts insects and birds and helps in pollination.
Sepals are the green-colored part that is present outside the petals. They cover the petals inside it when they are small. Seeds are the small hard part of the plant.
Therefore, the correct option is d. petals.
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Answer:
petals
Explanation:
got it right on edge 2022