what TWO factors do scientists track and monitor in all types of freshwater ecosystem?
A: light availability
B:nutrients
C:water flow rate
D: Biodiversity

Answers

Answer 1

Answer:

A: light availability

B: nutrients

Explanation:

Both nutrients and light availability affect the primary productivity of the freshwater ecosystem, therefore, scientists study both factors to track associated changes. This is because photosynthesis is driven by sunlight and nutrients availability. It is suggested that the abundance of autotrophs (e.g. phytoplanktons) in an aquatic ecosystem increases as light and nutrients availability increase. Thus, there will be more food available for secondary and tertiary consumers to feed upon. Resultantly, the aquatic environment will turn a biodiversity hotspot where many species of living organisms start dwelling. Thus, scientists mainly ecologists would focus on these two parameters at first that lead to consideration of other parameters.

For more information, you may want to read this scholarly article

https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2006.51.1.0288


Related Questions

What was the Hubble Space Telescope anticipated to do? What actually happened?

Answers

Answer:

I believe it was made for space exploration.

Which of the following describes how the Domain Archaea is different from the Domain Bacteria?
A.) Its organisms have cells with a nucleus
B). Its organisms are multicellular
C). Its organisms have cells with a different cell wall
D). Its organisms have eukaryotic cells

Answers

B). Its organisms are multicellular

Which is a reproductive strategy?
A. The adaptions that an offspring passes on.
B. The method an organism uses to produce offspring.
C. The number of alleles an organism passes on.
D. The DNA that is passed onto an offspring.

Answers

Answer:

The answer is B. The method an organism uses to produce offspring

The answer is B, the term reproductive strategy is loosely used to refer to the way an animal mates and/or raises offspring...

Organizing the Human Body
Organize the levels of organization in the human body from the smallest (left) to the largest (right) component
organ system
organ

Answers

Organ , organ system

Hope this helps you!!!!

Final answer:

The levels of organization in the human body from smallest to largest component are: cell, tissue, organ, organ system, and organism.

Explanation:The smallest component of the human body is the cell. Cells are the basic building blocks of life and carry out specific functions to maintain the body's functions.Cells combine to form tissues. Tissues are groups of cells that work together to perform a specific function, such as muscle tissue or nerve tissue.Multiple tissues come together to form organs. Organs are specialized structures with specific functions, such as the heart or lungs.Organs work together to form organ systems. Organ systems are groups of organs that work together to perform a specific function, such as the digestive system or respiratory system.All the organ systems together make up the organism, which is the largest component of the human body. The organism is a living entity that carries out all the necessary life functions.

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Studying how drought affects the food supply in a region of the Alaskan tundra would be studying a question at the __________ Level of Ecological Organization.



biosphere



population



community



ecosystem

Answers

the answer is ecosystem

The environment plays an important role in the food supply in the region. how drought affects the food supply in a region of the Alaskan tundra would be studying a question at the  ecosystem Level of Ecological Organization.

What is ecosystem ?

Ecosystem is defined as the natural resources along with the natural habitat and the living organisms along with the non living factors living in the environment.

Drought will definitely cause the loss of agricultural land along with the in corporation of other factors that are going to come in the practice. Major water scarcity will lead to many other losses as well. Major of the resources will be demolished along with the disturbance to the ecosystem.

Therefore, the major sources that will affect the agriculture and the various factors that disturb the loss in terms of resources destruction along with the major losses in terms of food resources as well.

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Which of the following best describes the pubic symphysis? A. process B. bone C. joint D. depressio

Answers

Answer: Joint

Explanation:

The answer is letter C.Joint

Please help me I’m confused

Answers

what was the question tho

Which organism in the food web below gets energy by eating other organisms?

Answers

Answer:

A heterotroph is any living organism that obtains its energy from carbohydrates and other organic material. In simpler terms, heterotrophs are organisms that cannot produce their own food, therefore they eat other organisms that CAN produce their own food. All animals and most bacteria and fungi are heterotrophic.

Explanation:

Hope this helped

Answer:

grasshopper, duck, tadpole, frog, ant, lizard, and snake

Explanation:

Consumers are organisms that cannot produce their own food and must feed upon other organisms. In this food web, the grasshopper, duck, tadpole, frog, ant, lizard, and snake are consumers because they feed upon other organisms.

Can anyone help me with this please?

Answers

Answer:

First start with saying to make it stable.

Explanation:

KnOwLeDgE

Which of these are effects of environmental change on populations? Check all that apply.

a. decrease of resources
b. extinction
c. impacts on growth and development
d. loss of habitat
e. change in competition
f. speciation

Answers

A decrease in resources and loss of habitat are major effects of environmental change on populations.

What is population change?

In ecology, population change refers to the processes that lead to a decrease or increase in the number of individuals in the population.

Population change may be associated with an increase in the number of individuals due to the allocation of resources.

In conclusion, a decrease in resources and loss of habitat are major effects of environmental change on populations.

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Answer:

a,d

Explanation:

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What scientific questions could Clyde ask about the

compost pile? Check all that apply.

Which item breaks down the fastest?

Does decaying fruit smell the worst?

Will the items break down faster if heat is added?

Will enclosing the items in an airtight bag affect the

rate of decay?

Is it a good idea to compost garbage?

Answers

Answer:

A c d

Explanation:

All of the following scientific questions could be asked about a compost pile:

Which item breaks down the fastest?Does decaying fruit smell the worst?Will the items break down faster if heat is added?Will enclosing the items in an airtight bag affect the rate of decay?Is it a good idea to compost garbage?

What is a compost pile?

A compost pile is a collection of organic materials, such as food scraps, yard waste, and paper, that are allowed to decompose naturally through the action of bacteria, fungi, and other microorganisms. The process of decomposition in a compost pile converts the organic materials into a nutrient-rich soil amendment known as compost, which can be used to enrich garden soil and improve plant growth.

Composting is a sustainable way to reduce waste and manage organic materials, as it diverts these materials from landfills and reduces the need for synthetic fertilizers. In order to create a compost pile, it is necessary to choose a suitable location, such as a backyard or a community garden, and follow basic guidelines for creating and maintaining the pile, such as adding a mix of green (nitrogen-rich) and brown (carbon-rich) materials, keeping the pile moist but not waterlogged, and turning the pile periodically to aerate it and speed up the decomposition process.

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Which of the following are ways that humans increase the amount of greenhouse gases in the atmosphere?

Answers

Answer:

bush burning

industrial gasses

deforestation

Answer:

all of them except for death of organisms

Explanation:

done 2021

How did the black codes make African Americans' lives similar to that before the Civil War?
They made African Americans work as enslaved labor.
They limited the rights and freedoms of African Americans.
They were disguised as laws that gave rights to African Americans.

Answers

Answer: They limited the rights and freedoms of African Americans.

Final answer:

The Black Codes were laws that severely restricted African Americans' freedoms post-Civil War, mirroring conditions of slavery by forcing them into exploitative labor contracts, limiting their rights, and perpetuating white supremacy.

Explanation:

The Black Codes were a series of discriminatory laws enacted by Southern states after the Civil War that aimed to maintain the racial hierarchy established during the slavery era. These laws severely restricted the freedoms and rights of African Americans, making their lives strikingly similar to the time before the Civil War. Under the Black Codes, African Americans were forbidden from self-employment, preventing them from engaging in trades such as blacksmithing, which many had learned as slaves. They were required to sign "annual labor contracts" with plantations or mine owners, and if they refused or were unemployed, they could be declared vagrants and effectively re-enslaved through forced labor auctioned to the highest bidder. Moreover, these codes facilitated rampant discrimination by preventing African Americans from accessing basic commercial services and participating in the electoral process, thus circumventing the newly passed emancipation-related amendments.

Through these restrictions, the Black Codes aimed to maintain white supremacy and economic dependence of blacks on whites like during slavery. African Americans were essentially locked into exploitative labor practices, such as sharecropping, which kept them tied to the land owned by whites, and had their movements restricted by severe vagrancy laws. The rights to participate in public life, including voting, serving on juries, or testifying against white individuals, were denied.

Which example illustrates a scientific advancement that has led to an engineering improvement in space exploration?

science experiments on the International Space Station that study how crystals grow in space

the space shuttle being used to send astronauts on the moon to collect samples

advances in optics leading to the development of the Hubble telescope




I need help ;-;

Answers

The example illustrates a scientific advancement that has led to an engineering improvement in space exploration is advances in optics leading to the development of the Hubble telescope.

What do you mean by space exploration?

Space exploration is the use of astronomy and space technology to explore outer space. While the exploration of space is carried out mainly by astronomers with telescopes, its physical exploration is conducted.

These benefits can be categorized into three fundamental areas: innovation; culture and inspiration; and new means to address global challenges.

Space exploration allows us to prove or disprove scientific theories developed on Earth. Studying the solar system, for example, has brought us insights into such phenomena as gravity, the magnetosphere.

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Match each type of rock with the description of how it forms.
metamorphic rocks
layers of sediment dry together
sedimentary rocks
magma or lava cools and solidifies
igneous rocks
existing rocks are exposed to extreme
conditions

Answers

Answer:

metamorphic-existing rocks are exposed to extreme conditions

sedimentary rock-layers of sediment dry together

igneous rock-magma or lava cools and solidifies.

Explanation:

The matched rock types are

Metamorphic rocks - existing rocks are exposed to extreme conditions.

Sedimentary rocks - layers of sediment dry together.

Igneous rocks- magma or lava cools and solidifies.

Rocks

Rocks are solid materials that are made up of geological materials. The igneous rocks are formed when molten magma cools and solidifies. Sedimentary rocks are formed from the precipitation of minerals.

Finally, the metamorphic rocks arise when existing rocks undergo pressure that causes them to change.

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What did Mike Culbreath's doctor prescribe him to manage his diarrhea?
A.Azithromycin
B.Hydroxyquinone
C.Ciprofloxacin
D.Thyroxine

Answers

Answer:

C.Ciprofloxacin

Explanation:

Ciprofloxacin is an antibiotic.  Mike Culbreath was sick because he had an infection with a bacteria called campylobacter, which people usually contract from eating uncooked infected chicken.

However, the particular strain of bacteria he had was resistant to to Ciprofloxacin, because this drug is often used to treat farm animals.

Therefore, Mike got sicker and sicker until his kidneys almost failed from dehydration.

Anyone willing to help? I honestly have no clue what I’m doing..

Answers

the youngest would be the ones at the top and the oldest would be at the bottom. the oldest is B and the ones around it, as they get bigger get younger. hope this helps :)

HELPPPPP LOTS OF POINTS

Answers

Answer:

B

Explanation:

its literally a cell law .-.

B,

hope it helps :)))))))))

What does an urn-shape age pyramid represent???

Answers

In urn-shaped age pyramid, the number of reproductive individuals is higher than the number of pre-reproductive individuals. It represents declining or diminishing population with negative growth. In bell-shaped age pyramid, the number of pre-reproductive and reproductive individuals is almost equal.

Do the advantages of GMOs outweigh the disadvantages?

Answers

By making plants more resistant to pests, GMOs also reduce the risk of major infestations that can destroy crops. Obviously, it's important to make sure that the food we grow is safe, and that herbicides and pesticides don't harm the environment.

Final answer:

The debate on whether the advantages of GMOs outweigh the disadvantages revolves around increased production and potential nutritional benefits versus concerns over environmental and health effects. A careful evaluation and extensive research are recommended to understand and mitigate potential adverse effects, with considerations on making GMO technology more accessible to address issues of affordability and availability.

Explanation:

Do the advantages of GMOs outweigh the disadvantages? This question embodies a pivotal debate in modern agriculture and biotechnology. Genetically Modified Organisms (GMOs) are organisms whose genetic material has been altered using genetic engineering techniques, intended to introduce new traits such as increased resistance to pests or improved nutritional content.

Increased production: GMO crops often produce higher yields.Reduced pesticide use: By making crops resistant to pests, the need for chemical pesticides is diminished, contributing to a lower environmental impact.Nutritional enhancements: GMOs can be engineered to contain vitamins, minerals, and other nutrients to combat dietary deficiencies in populations.

Unknown and unintended consequences: The long-term effects of GMO consumption on human health and the environment are still not fully understood.Hybridisation and invasiveness: GMOs could potentially crossbreed with wild relatives, leading to invasive species that could disrupt ecosystems.Access and affordability: High costs and patent issues may prevent access to GMO seeds by small-scale and impoverished farmers.

The question of whether the benefits of GMOs outweigh the risks is complex. It requires a careful balance between the potential for improved agricultural efficiency and nutritional benefits against the need for thorough assessment and management of environmental and health risks. Experts recommend proceeding cautiously, conducting extensive research, and performing environmental impact assessments (EIAs) to better understand and mitigate any adverse effects of GMOs. Furthermore, making GMO technology and seeds more accessible to those in need could amplify its benefits.

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Which advances in science and technology improved water quality? Check all that apply.
building more wells
adding chlorine to water supplies
creating wind farms to draw water
bottling water in plastic bottles
checking public water for traces of disease

Answers

Answer:

b and e

Explanation:

just did the work

The advances that improved water quality are:

Adding chlorine to water supplies

Checking public water for traces of disease.

Adding chlorine to water supplies:

Chlorination is a common and highly effective method to disinfect water and make it safe for consumption. Chlorine is added to water supplies to kill or inactivate harmful microorganisms, improving its safety and quality.

Checking public water for traces of disease:

Monitoring and testing public water supplies for the presence of harmful pathogens and contaminants are critical advancements. Regular testing helps identify potential issues, enabling appropriate actions to maintain water safety and quality.

Building more wells, creating wind farms to draw water, and bottling water in plastic bottles are not direct advances aimed at improving water quality:

Building more wells: While building more wells can provide increased access to water, it does not inherently improve water quality. The quality of the water from a well depends on various factors such as geological conditions, contamination risks, and treatment.

Bottling water in plastic bottles: Bottling water in plastic bottles primarily addresses water packaging and convenience rather than water quality itself. The quality of water in a bottle depends on the source and treatment before bottling.

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Which of the following processes releases carbon dioxide into the
atmosphere?

A. Fossilization
B. Transpiration
C. Cellular restoration
D. Photosynthesis

Answers

Answer:

A.Fossilization

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List 2 types of forces acting on a moving object and explain how each force acts on the moving object

Answers

Answers and Explanation:

- Gravity; gravity is pulling the object down. Depending on whether the object is moving uphill or downhill, gravity can slow down or speed it up, respectively.

- Friction; this is the force that appears from contact between two surfaces. In this case, it could be the object and the floor. Friction causes resistance between the two, which can slow down the object.

Hope this helps!

Why does a person have to get a flu shot every year? Why isn't one flu shot for life enough?

Answers

Answer:

Because you’ll get sick

Explanation:

Please help with all three

Answers

Q6: A
Q7:D
Q8:C

Reasoning
Q6: Based on all the other questions talking about common ancestors I deduced that to find a “common” ancestor they need to find things that are the same.

Q7: All arthropod have a exo skeleton for example a lobster or crab. They all have a head, abdomen and thorax for example ants. They all have legs with joints for example a spider.

Q7:So bones are traveled down by ancestors so the types of bones stay the same but natural selection has changed them to better fit their environment.

What is the function of the endocrine system?
A.To produce blood cells
B.To protect the body from pathogens
C.To collect fluids that leak from tissues
D.To produce chemical signals

Answers

The answer is D.

Explanation:
The endocrine system is in charge of hormones, therefore hormones = chemical signals.

PLZ HELP!!! I'm timed. I need answer as soon as possible. Will mark the brainliest if correct and ad a thanks with a rate of 5 too. thank you :) .
Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change?

carbon dioxide
methane
nitrous oxide
fluorinated gas

Answers

Carbon dioxide! Hope I helped

Answer:

fluorinated gas

Explanation:

i put b. methane on quiz and got it wrong

Is the moon a star, a planet, or neither?

Answers

Answer:

The moon is a moon

Explanation:

explain why the ocean currents are warmer in some parts of the earth than others. what causes the currents to move ?

Answers

Answer:

An ocean current is generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences.

Explanation:

Cold water from the north and south poles, warm water from the equator, are in constant motion. Depending on where you are, the water will be freezing or warm.

The temperature variation arises because areas near the equator receive more direct solar radiation than areas near the poles. However, these areas do not constantly get warmer and warmer, because the ocean currents and winds transport the heat from the lower latitudes near the equator to higher latitudes near the poles.

Large quantities of heat can be absorbed and stored in the surface layers of the ocean. This heat is transported by ocean currents. In this way, the ocean currents help regulate Earth's climate by facilitating the transfer of heat from warm tropical areas to colder areas near the poles.

life on earth began as the product of chemical reactions which occurred

Answers

Answer: Over 4 billion years ago

Explanation: The chemical reactions between carbon and water is said to bring about life according to scientists. These reactions builds largely upon four families of chemicals (lipids, carbohydrates, amino acids, and nucleic acids).

However, the actual time of life on Earth has varying speculations from different scientists in fields of study (such as molecular biology, chemistry, oceanography, etc).

Furthermore, microfossils within hydrothermal-vent precipitates dated from 3.77 to 4.28 billion years is presumed to inhabit the oldest record of life on Earth. Hence, which is presumed to have occurred after ocean formation 4.4billion years ago.

Thus, the actual date of the chemical reactions that brought about life is not rigid, but presumed to have occurred over 4billion years ago (according to research).

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