Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
I'm 100% Confident it's (A) <span>All modern humans evolved from one group of African H. sapiens.
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Answer:
Stimulating the brain can enable the benefits of
Explanation:
Independent: The second group is not given the drug.
Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.
Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
Answer:
Water flowing in rivers and streams
Explanation:
Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds.
