well fungi gets alot of its energy from dead things so it would have to be b algae since c and d are just microscopic organisms
Answer:
Kidneys
Explanation:
The paired kidneys are often considered the main organs of excretion. The primary function of the kidneys is the elimination of excess water and wastes from the bloodstream by the production of the liquid waste known as urine
Answer: isotopes is the answer to this question
Answer:
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D.
They break down dead organisms.