Answer:
a steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
Explanation:
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Answer:
A hydrogen atom is made up of a nucleus with charge +1, and a single electron. Therefore, the only positively charged ion possible has charge +1.
Explanation:
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Answer: Taxonomy is the process of classifying organisms based on similarities.
Explanation:
B. Tundra - only biome with snow
