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Xelga [282]
3 years ago
11

Mention the site of exchange of material between the blood and surrounding cells.

Biology
1 answer:
Mumz [18]3 years ago
4 0
It's ALVEOLI where O2 and CO2 exchanges between them...
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The total amount of chemical energy produced by autotrophs, such as plants and phytoplankton, is called gross primary production
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Answer:

This question lacks options, the options are:

a) Negative primary production

b) Net primary production

c) Secondary production

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e) Positive primary production

The correct answer is b.

The total amount of chemical energy produced by autotrophs, such as plants and phytoplankton, is called gross primary production. The energy that remains after plants use some of the gross primary production to fuel their own metabolism is known as <u>net primary production</u>.

Explanation:

Net Primary Production (NPP) is the value that results from the difference between gross production and respiration of the primary producers themselves. It manifests as growth and / or reproduction. It represents the matter and energy available for the next trophic level, that is, the net primary production is what is left after subtracting the energy that plants use for their metabolism or maintenance (such as breathing, tissue construction and reproduction).

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Which coefficient is needed in front of NaNO3 to balance the equation Na2S + Zn(NO3)2 → ZnS + _NaNO3?
weqwewe [10]
I think the <span>coefficient is na2s.

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vagabundo [1.1K]

Answer:

D

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In a active transport materials move from an area of ? Concentration and use ?
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