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Nana76 [90]
3 years ago
5

Which is part of the biosphere? A. oceans B. stratosphere C. volcanoes D. humans

Biology
1 answer:
Nataly_w [17]3 years ago
3 0
The answer is Oceans because the biosphere extends from the deepest root systems of trees,to the dark environment of ocean trenches,to lush rain forests and high mountaintops.
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In a food chain 200 kg of wheat is fed on by 18 kg of mice which in turn are eaten by 1kg of hawk. What is the percentage energy
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Answer:

0.1% of energy

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers absorb only 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is dissipated in the environment.  

At each trophic level occurs an energy transfer to the next, with only 10% being usable in each of them. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time.

If wheat transferred 10% of the energy to mice, and of that 10% mice transferred 10% of the energy to hawk, then the percentage of energy transferred from the first trophic level to the third equals 0.1%.

10% (1st TL-2nd TL) / 10% (2nd TL - 3rd TL) = 0.1% (1stTL - 3rd TL)

<em>TL = Trophic level           </em>

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B. Branched ur welcome
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Please help!!! ASAP
insens350 [35]

<u><em>Naturally acquired active immunity:</em></u>  It happens when someone is exposed to a live disease and gets the disease. The person then becomes immune as a result of the first immune response.

It's sort of like a fall and learn to get up for the body.

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