Answer:
a
Explanation:
1st order
What is biodiversity
Answer:
the variety of life in the world or in a particular habitat or ecosystem
Answer:
Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level.
Explanation:
Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. Biodiversity is not distributed evenly on Earth, and is richer in the tropics. These tropical forest ecosystems cover less than ten percent of earth's surface, and contain about ninety percent of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural processes that sustain life.
Rapid environmental changes typically cause mass extinctions. More than 99.9 percent of all species that ever lived on Earth, amounting to over five billion species, are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 1037 and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as four trillion tons of carbon. In July 2016, scientists reported identifying a set of 355 genes from the Last Universal Common Ancestor (LUCA) of all organisms living on Earth.
The age of the Earth is about 4.54 billion years. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago,during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old meta-sedimentary rocks discovered in Western Greenland. More recently, in 2015, "remains of biotic life" were found in 4.1 billion-year-old rocks in Western Australia. According to one of the researchers, "If life arose relatively quickly on Earth .. then it could be common in the universe."
Since life began on Earth, five major mass extinctions and several minor events have led to large and sudden drops in biodiversity. The Phanerozoic eon (the last 540 million years) marked a rapid growth in biodiversity via the Cambrian explosion—a period during which the majority of multicellular phyla first appeared.[34] The next 400 million years included repeated, massive biodiversity losses classified as mass extinction events. In the Carboniferous, rainforest collapse led to a great loss of plant and animal life. The Permian–Triassic extinction event, 251 million years ago, was the worst; vertebrate recovery took 30 million years. The most recent, the Cretaceous–Paleogene extinction event, occurred 65 million years ago and has often attracted more attention than others because it resulted in the extinction of the non-avian dinosaurs.
The period since the emergence of humans has displayed an ongoing biodiversity reduction and an accompanying loss of genetic diversity. Named the Holocene extinction, the reduction is caused primarily by human impacts, particularly habitat destruction. Conversely, biodiversity positively impacts human health in a number of ways, although a few negative effects are studied.
The United Nations designated 2011–2020 as the United Nations Decade on Biodiversity. and 2021–2030 as the United Nations Decade on Ecosystem Restoration, According to a 2019 Global Assessment Report on Biodiversity and Ecosystem Services by IPBES 25% of plant and animal species are threatened with extinction as the result of human activity. An October 2020 IPBES report found the same human actions which drive biodiversity loss have also resulted in an increase in pandemics.
In 2020, the fifth edition of the UN's Global Biodiversity Outlook report, which served as a “final report card” for the Aichi Biodiversity Targets, a series of 20 objectives set out in 2010, at the beginning of the UN's Decade on Biodiversity, most of which were supposed to be reached by the end of the year 2020, stated that none of the targets – which concern the safeguarding of ecosystems, and the promotion of sustainability – have been fully met.
3 ejemplos de autopoiesis
Autopoiesis se define como la habilidad de un organismo para mantener su estabilidad aun no estando en equilibrio. Ejemplos de autopoiesis incluyen la capacidad de reproducción, auto-renovación y mantenimiento propio.
La autopoiesis refiere a la forma de auto-organización de los organismos de modo que cada componente de un ser vivo es producido por los otros componentes del sistema.
Este concepto fue desarrollado por los biólogos chilenos H. Maturana y F. Varela (1973) con el fin de comprender los procesos químicos asociados al mantenimiento de los sistemas biológicos.
La autopoiesis está representada por la capacidad de auto-organización y auto-generación que poseen los organismos.
La autopoiesis indica que todos los organismos comparten características únicas, entre las cuales se destacan la capacidad de reproducción, auto-renovación y mantenimiento propio.
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Correlation can be used only for making predictions, not for making?
A. a third variable
B. observations
C. two variables correlate
D. cause-and-effect statements
Plz help
For purposes of making a prediction, the underlying reason for a correlation does not matter. As long as the correlation is stable–lasting into the future–one can use it to make predictions. What a correlation does not tell you is why two things tend to go together.
Which of the given examples below is a compound? *
A.Water
B.Gold
C.Silver
D.Oxygen
Answer:
oxygen. And yes answer this 2.
Prepare a conversation (dialogue) between two friends explaining about the causes and effects of environment pollution and give it a suitable topic. (About 180 to 200 words)
Explanation:
Hi there!
The answer is water.
Reason:
Water is a compound made from hydrogen and oxygen in the ratio of 2:1.
And gold, silver and oxygen are elements not compound.
So, the answer is option A(water).
Hope it helps!
Why is the process of DNA replication essential to a cells
preparation for division?
Answer:
hdrulrykdmgdymdgmdfn thak
Identify the major source of energy for living organisms and the main process by which that energy is captured and stored on Earth.
Answer:
sunlight and heat
Explanation:
The atmosphere captures sunlight and heat to earth's surface warming the earth.
The main processes by which energy is captured and stored on the earth are heat and sunlight.
What is an energy source?The organisms will get energy from different organisms are called energy sources. The primary energy source for creatures and the ecosystems they are a part of is the Sun.
Sunlight energy is used by producers like plants, algae, and cyanobacteria to convert carbon dioxide and water into organic matter. The start of energy flow through practically all food webs is established by this.
The process of life is sustained by the constant inflow of energy, primarily from sunshine. Photosynthesis is a process that organisms like plants, algae, and cyanobacteria use to turn carbon dioxide and water into organic molecules like carbohydrates.
Therefore, The main processes by which energy is captured and stored on the earth are heat and sunlight.
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All tissues within a plant are capable of photosynthesis as all plant cells contain
chloroplasts.
True
False
A large number of prairie dogs move into the ecosystem.
Answer:
can u explain to more
Explanation:
(WORTH 60 POINTS) Which organisms can cause contagious diseases?
microorganisms
multicellular organisms
Answer:
microorganisms.
Hope you could understand.
If you have any query, feel free to ask.
Microorganisms is your answer
Hypnosis____.
1) is not understood by psychologists
2) is just like being asleep
3) can reduce the experience of pain
4) operates the same way for all individuals
5) is completely different from the relaxed, waking state
Tracheids, sieve-tube cells, vessel elements, and companion cells are all components of the
Answer:
Tracheids, sieve-tube cells, vessel elements, and companion cells are all components of the Complex Permanent Tissue
Explanation:
Complex Permanent Tissue consists of Xylem and Phloem :
Xylem consists Tracheids and vessel element
Phloem consists of sieve-tube cells and companion cells
AS THESE ALL ARE UNDER COMPLEX PERMENANT TISSUE WE CONSIDER IN THIS GROUP
In the city of Epiland, public health agencies realized that the prevalence of cancer x, a very aggressive type of cancer, has been rising for the last 15 years. Some epidemiologic studies were conducted to find the causes of this type of cancer to be able to implement preventive strategies to reduce the mortality of this disease. One study conducted by researchers from the University of Epiland found that the attributable proportion of disease among smokers is 33.3% and the attributable proportion of disease among people that drink water with a high concentration of heavy metals is 75.4%.
Required:
a. Assuming that the population size is 1,000 people, the prevalence of smoking in Epiland is 60% and the percentage of people drinking water with a high concentration of heavy metals is 30%, calculate the total number of cases of cancer x that could be prevented if each one of the exposures were eliminated. What would be your suggestion to the public health agencies if they asked you which one of the exposures would have a greater impact on reducing the prevalence of the disease if it was eliminated?
b. Would your suggestion be different if the percentage of people drinking water with heavy metals were 10% and the prevalence of smoking remain the same? Which measure of association would be more efficient in helping you answer these questions?
Answer:
you can use diff. method of association but the efficient 1 is d alliteration method
After a scientist finishes conducting an investigation, he or she is expected to publicly present the results. Why is it important for a scientist to communicate his or her results with other scientists?
A. If a scientist does not publish his or her results, he or she may never take credit for any discoveries made during an investigation.
B. The results may influence future investigations conducted by other scientists.
C. The results must be disproven by other scientists.
D. If a scientist does not publish his or her results, then the results will never be considered important.
Answer:The correct answer will be- to evaluate the results and provide instructions to researchers.
Explanation:
A scientific method is a systematic approach to answer and understand the natural phenomenon.
The last step in the scientific method is to communicate the results with other scientists which could be done through publishing the results in peer-reviewed journals and presenting the results in conferences where the results could be discussed.
The scientist needs to share the results to scientists so that the scientific community can evaluate the results, as well as the results, provides the instructions to other researchers so that they can repeat their experiment.
Thus, to evaluate the results and provide instructions to researchers is the correct answer.
Explanation:
Fill in the blanks.
Proteins are responsible for the _______ and _______ of much of our bodies (and other organisms). The instructions for making protein are encoded in _______. These genes provide the squence of building blocks known as ______ ______. This string of amino acids then folds into different shapes. The structure of proteins determines what a _______ can do. Proteins contain carbon, hydrogen, oxygen, and nitrogen.
Answer:
Proteins are responsible for the mass and fat of much of our bodies (and other organisms). The instructions for making protein are encoded in DNA. These genes provide the sequence of building blocks known as nucleotides. This string of amino acids then folds into different shapes. The structure of proteins determines what a molecule can do. Proteins contain carbon, hydrogen, oxygen, and nitrogen.
Explanation:
Kindly pardon me: I ain't so sure of the first two answers.
What is an negative connotation of the word short
Answer:
tiny, little, compressed, or petite
Explanation:
C2H6 has how many electrons in its electron cloud?
Materials are provided to students to build models of a prokaryotic cell, a eukaryotic cell, and a virus. The materials and the structures they represent are listed in the table shown.
Which material will students use in all three models?
A) Yellow paper oval
B) Gray Paper hexagon
C) Blue Yarn
D) Purple Buttons
[I know its c (blue yarn) because every life form has genetic material]
Answer:
(C) Blue Yarn
Explanation:
It was correct on the test and yes all life forms have genetic material.
what is the most important reason the plasma membrane is selectively permeable
Answer:
to facilitate the transport of substances to and from the cell
Explanation:
phospholipid bilayer allows only certain substances to pass through without it there would be no control of what goes in and out of a cell
What is the function of the centromere?
a
To pull the chromatids apart during anaphase.
b
To hold the chromatids together until anaphase.
c
To help degrade the nuclear membrane during prophase.
d
To replicate the chromosomes.
Answer:
B
Explanation:
the answer is be it’s what the do i dont know how to explain
I hope this helps
PLEASE HELP 100 POINTS FLVS
Mecayla harvests oysters from the shallow waters of the marsh near her home. She eats the shellfish almost every day. Her brother Kendis dislikes oysters but eats local predator fish from the river three times a week. Recent water quality tests show moderate levels of heavy metals in the river and marsh. What is the most likely result of this pollutant on Mecayla and Kendis if they maintain the same diet?
Mecayla will get sick first because she eats oysters every day.
Kendis will get sick first because of less bioaccumulation.
Biomagnification will cause Kendis to become ill first.
Bioaccumulation will cause Mecayla to become ill first.
Answer: Biomagnification will cause Kendis to become ill first.
Explanation: This answer is correct because Kendis is eating the predator fish and Mecayla is only eating some oysters from the shallow water. Biomagnification causes the concentration of toxins, specifically in the predator fish, therefore Kendis will become ill first.
Place the three pieces of bone side by side. Describe their appearance. Do they look different from one another?
which of the following is an example of the endocrine system maintaining homeostasis?
- detecting a pain stimulus and sending a signal to the spinal cord to perform an automatic response
- producing an excessive amount of hormones in the blood and not sending a signal to stop production
- releasing insulin to decrease blood sugar and releasing glucagon to increase blood sugar
- using sense organs to get information about the outside world and direct an appropriate body response
Answer:
c) releasing insulin to decrease blood sugar and releasing glucagon to increase blood sugar
Explanation:
The endocrine system is responsible for hormone secretion, and the process of homeostasis is to maintain equilibrium. By secreting insulin to increase blood sugar it is maintaining equilibrium.
11. Which organism has the lowest biotic potential?
O A. Mouse
O B. Rhinoceros
O C. Golden Retriever
O D. Rabbit
Answer:
The answer is B. Rhinoceros
Explanation:
Hope this helps!
What physical and behavioral adaptations do zebras have that help them evade predators? (Site 1)
Answer:
Hey mate....
Explanation:
This is ur answer.....
The physical and behavioral adaptations do zebras have that help them evade predators are: live in families and travel in large numbers for protection; bunch together to confuse the predator with their stripes or run away at speeds up to 40 m.p.h;. sharp teeth and strong hoofs to defend themselves.
Hope it helps!
Brainliest pls!
Follow me! ♤
Answer:
The physical and behavioral adaptations do zebras have that help them evade predators are: live in families and travel in large numbers for protection; bunch together to confuse the predator with their stripes or run away at speeds up to 40 m.p.h;. sharp teeth and strong hoofs to defend themselves.
Explanation:
the other person was 100% correct but i wanted to add it above the explanation line so anyone who isn't paying for brainly can still see it :)
phân tích phương pháp giáo dục học sinh tiểu học phù hợp vơi kiểu học sinh mang loại thần kinh nghệ sĩ
Answer:
i d o n t u n d e r s t a n d t h a t m r
what is chlorophyll ?
Answer:
Chlorophyll is a pigment present in all green plants and a few other organisms. It is required for photosynthesis, which is the process by which light energy is converted into chemical energy
Explanation:
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Chlorophyll is any of several related green pigments found in the mesosomes of cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words χλωρός, khloros and φύλλον, phyllon. Chlorophyll is essential in photosynthesis, allowing plants to absorb energy from light.StructureThe chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon–hydrogen side chain, known as a phytol chain. Variations are due to minor modifications of certain side groups.-XxItzAdiXxQuestion 1 (4 points)
3
Match the food sample to the correct test results!
HINT: USE YOUR LAB GUIDE!
Positive for proteins and
lipids
1. A
Positive for
monosaccharides only
2. E
3. G
No positive tests
4. M
Positive for starch only
Answer:
4
Explanation:
No positive tests
4. M
Positive for starch only
Describe how the process of photosynthesis led to an increase in cellular respiration and more complex cells
and organisms
Please help me
Answer:
BRIEF EXPLANATION
Photosynthesis is the anabolic process of building up glucose and making O2 from CO2 and water while cellular respiration is the opposite catabolic process of breaking down glucose by oxidizing it with O2 to get CO2 and water.
Explanation:
MAIN ANSWER TO THE QUESTION.
Photosynthesis is like when you’re trying to gain muscle and you eat tuna and eggs to turn it into muscle tissue. This takes energy in the form of food just like how photosynthesis requires sunlight for energy.
Cellular respiration is like when impoverished people starve for a week because they don’t have sufficient food to eat for nutrients. They have to get them from somewhere else. So the body breaks down glycogen, body fat and muscle tissue to provide the energy.
a
4) Select 5 that apply.
As discussed, select all the special processes that cells perform. Select all that apply.
carburetion
excreting waste
taking in oxygen
reproducing
converting energy
digesting food
conscious thought
The special processes that are performed by a cell are excreting waste, taking in oxygen, reproducing, converting energy, and digesting food.
What is a cell?Cell is a functional and structural unit of the living things. Many cell combines to form a tissue and then the whole body.
Cell preform all the necessary tasks of the body. All the work is done by the cell.
Thus, the correct options are B, excreting waste, C, taking in oxygen, D, reproduction, E, converting energy, and F, digesting food.
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Which statements regarding a cell membrane is true?
Select one:
a.
It contains chemical markers.
b.
It is composed of one type of molecule.
c.
It protects the cell from being destroyed by bacteria.
d.
It is needed to break down materials before they enter the cell.