The answer is greenhouse effect
Answer: The answer is rock.
Explanation: A rock is a a solid substance in which it is composed of large quantities of one mineral, or contains 2 or more minerals.
Answer: It's C
Explanation: because They also do not have a brain, respiratory system, or circulatory system.
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The answer is B, Pangaea. This was the name for the large continent that supposedly existed before we had all of our separate continents today (all of which were part of Pangaea).
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Answer:
Bacteria release carbon dioxide into the atmosphere when they break down dead plants.
