Answer:
So they can breathe
Explanation:
Without oxygen the fish can't breath, they would then suffocate and die.
Sorry if your asking for a more detailed answer, but I'm not sure what else to say
The answer is <span>aqueduct.</span>
Answer:
Analysis of the data shows that the ratio of floating algae to sea floor algae dramatically increased at the same time that oysters were removed from the Bay. ... (It is also possible to infer from the graph that high floating algae levels led to the decline in oysters.
Kidney
explaination
The liver, the pancreas, the kidneys, and the brain (hypothalamus, the autonomic nervous system and the endocrine system) help maintain homeostasis. The liver is responsible for metabolizing toxic substances and with signaling from the pancreas maintains carbohydrate metabolism
