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ASHA 777 [7]
2 years ago
11

What is the major function of valves in human veins

Biology
1 answer:
Olenka [21]2 years ago
3 0
To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).         
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The process of breaking down of oxygen into alcohol and carbon dioxide without using
shepuryov [24]

Answer:

Fermentation

Explanation:

I think there is a typo in the question as it doesn't make sense to breakdown oxygen - do you mean the proces of breaking down sugar?

Fermentation vis a type of anaerobic respiration, meaning it occurs in the absence of oxygen. It occurs when sugar is broken down into ethanol and carbon dioxide. It is used to produce alcoholic drinks like beer and wine, and in the production of bread.

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3 years ago
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Explanation:

sorry but now you know those are plant tissue

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All living things need to transport molecules from one place to another within the body in order to carry out necessary life
nataly862011 [7]

Answer:

I think it is A The cohdsive behavior of water molecules make it easy to transport throughout the body.

Explanation:

8 0
3 years ago
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lakkis [162]

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5 0
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Shkiper50 [21]

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Together

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All of the organisms need each other to survive, all of the natural cycles are necessary to keep the Earth in balance.

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2 years ago
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