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Mnenie [13.5K]
3 years ago
14

Why are external barriers important to our immune system?

Biology
1 answer:
solniwko [45]3 years ago
7 0

Answer:

Maybe it was because external barriers can attack to our body and it can hurt us

Explanation:

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How long can a healthy ecosystem remain stable.​
Lesechka [4]

Answer:

Each component is in balance with the other components. As long as the components are in balance, the ecosystem can remain stable and healthy. Ecosystems may remain stable for many years if the different components are balanced.

4 0
3 years ago
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Which statement best describes a human influence on the biogeochemical cycles?
maksim [4K]

The statement that best describes human influence on the biogeochemical cycle is as follows: increased eutrophication caused by high levels of nitrogen and phosphorous.

<h3>What is eutrophication?</h3>

Eutrophication is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

Eutrophication is one major effect of the anthropogenic activities that release inorganic nutrients such as phosphate, nitrate etc into aquatic ecosystems.

However, eutrophication has its negative impacts on biogeochemical cycle as it alters the cycling of these nutrients.

Therefore, the statement that best describes human influence on the biogeochemical cycle is as follows: increased eutrophication caused by high levels of nitrogen and phosphorous.

Learn more about eutrophication at: brainly.com/question/13232104

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6 0
2 years ago
Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both.
Aleksandr-060686 [28]

Answer:

Explanation:

Scientific theory: a well established, highly reliable explanation

Scientific hypothesis: makes predictions of future events/

Both: based on observations of natural phenomenons/ can be tested by many researchers

5 0
3 years ago
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About two thirds of the world’s human population survive primarily by eating one or more of three grain crops. what are these
atroni [7]
The three grains are rice, wheat, and corn

Rice is the main grain used in places such as Asia ans SEA, corn is mostly used in the Americas, while wheat is mostly found in European countries.
3 0
3 years ago
This is a quality that separates man from other living things that refers to man's superior ability to to manipulate the environ
Eva8 [605]

Answer: <u>Human intellect</u>

Explanation:

Adaptability refers to one's ability to readily  react to changes in one's environment. Humans easily adapt to changes and even modify or change our environment to solve obstacles or issues. This is integral to human intellect or intelligence -we are highly adaptive, capable of execution and organizing complex tasks.

5 0
3 years ago
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