Answer: It is important to control the variables so the evidence from the experiment are as accurate as possible.
Answer:
Explanation:
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<u><em>Heart</em></u> is found to have the oldest cells in the human body
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an natural pathway by which essential elements of living matter are circulated.
Nitrite was the preferred nitrogen for denitrification,followed by nitrate and no significant
Answer:
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Explanation:
Answer:
C
Explanation:
As shown in the picture I attached to my answer, we can see all of the tectonic plates, which make up the lithosphere. The pieces do move very slightly every year.