Answer:
Abiotic
Explanation: Water is not a living thing, therefore water is an abiotic factor.
Answer:
C. Uranus, Neptune, and Pluto
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Answer:
Photosynthesis
Explanation:
Bacteria can obtain energy and nutrients by performing photosynthesis, decomposing dead organisms and wastes, or breaking down chemical compounds.
The layers on the top may be younger, while the bottom layers may be much older.