D is the answer because carbondioxide and oxygen are both needed for plants or green plants to survive.
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The thinking habits of your brain and how they could work
Watersheds are important because the surface water features and stormwater runoff within a watershed ultimately drain to other bodies of water. It is essential to consider these downstream impacts when developing and implementing water quality protection and restoration actions. Everything upstream ends up downstream.
Answer:
It is multicellular.
that's my logical answer .
Explanation:
