<span>A. If one essential nutrient within an ecosystem runs out, primary productivity will be limited.
A specific nutrient is need for every organism in the ecosystem. If this particular nutrient is diminished within the ecosystem then cellular processes will decreases and a great number of specie will die. </span>
Organic compounds are used as building blocks for. Answer : Organic compounds are compounds that contain Carbon, C and contain Hydrogen, H as well. ... This leaves us with choice 4, indeed, proteins, starches and fats are organic compounds.
The best and most correct answer among the choices provided by your question is the fourth choice or letter D.
The cell would lose structure and shape when the ribosomes of a cell were damaged and stopped functioning.
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The answer is C . The rock cycle is driven by energy from the sun as well from the interior of Earth.
