The ozone layer helps prevent harmful UV rays from entering the atmosphere.
The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
Answer:
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon from the atmosphere
Explanation:
This is the role of the reactions in the carbon cycle.
C. They are specialized tissues that form an organ system.
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Answer:
answer is 100 base pairs long
