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jeyben [28]
2 years ago
13

Going down each trophic level on the pyramid results in a 90% decrease in that energy transfer. True False.

Biology
1 answer:
aleksklad [387]2 years ago
8 0
That statement is true because The amount of energy at each trophic level decreases as it moves through an ecosystem at least is 10% of the energy at any traffic levels transferred to the next level the rest is lost largely through the metabolic process as heat.
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Phytoplankton form the base of food webs, but are only present in the upper few hundred meters of the ocean. A number of factors
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Answer:

The correct answer is d. Oxygen

Explanation:

Phytoplanktons are responsible for the fixation of approximately half of the global carbon therefore seawater has high CO2 concentration which is required by phytoplanktons to make their food.  

They are the primary producers of oceans and they are responsible to support the food chain of oceans. Factors that can limit their growth are mainly sunlight and nutrients like phosphorus, nitrogen, etc.

As phytoplanktons are photosynthetic they release oxygen itself as a byproduct therefore oxygen is not a limiting factor to phytoplanktons. So the right answer is d.

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3 years ago
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