Answer:
inner, rock, mercury I just took the test on Edg and got a 100%
Explanation:
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Answer:
Nitrogen
Explanation:
All living organisms need nitrogen in order to build proteins and build DNA.
Some animals (most) get nitrogen by eating plants I believe.
Yellow River Civilization
Answer:
Adaptations develop when certain variations or differences in a population help some members survive better than others
Explanation:
