The upper most layer is the canopy
Answer:
lungs
throat
ears
Explanation:
I'm not sure how this helps.
Answer:
B) They do not get enough oxygen, and die.
Explanation:
They loose oxygen due to the algae. The algae bloom uses up all the O2 in the plant structures
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An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide