The sponge-like structure, as well as the high salt content of water and the <span>ease of contaminating water contribute to the environmental stress on a coral reef.
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Answer:
parasitism,
Explanation:
parasitism, relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.
The correct answer is a vacuole
<span>The sum total of all the chemical reactions that occur in organisms is called-</span>Metabolism
B is the answer if not B then C
