The answer is B. Heterotrophs. All animals and fungi are heterotrophs. Hope I helped!
It is water pollution, since you are polluting the river.
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Skin is the first defense structure.
Answer:
Ribosomal RNA (rRNA), molecule in cells that forms part of the protein-synthesizing organelle known as a ribosome and that is exported to the cytoplasm to help translate the information in messenger RNA (mRNA) into protein.
Explanation:
The part of the earth's crust, waters, andatmosphere that supports life.