Answer:
B. Ethanol
Explanation:
During absence of O2 pyruvic acid is reduced to ethanol in alcoholic fermentation.
The one that makes the most sense would be D
Answer:
The deposition rate of the two rock layers was identical.
Explanation:
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If caterpillars were removed, sparrows and frogs would have nothing to eat and it would thus disrupt their food change. Caterpillars also munch on grass to keep the growth under control.
Bees fly to flower to flower gathering nectar, which they make into food benefiting the bees.
