The answer is D. A is obviously incorrect because they just listed these many different cells that are grouped together. B is incorrect because not only similar cells are grouped together, and they often perform different functions. C is incorrect because the functions are never unrelated, they are usually interdependent with each other.
Answer:
The earth is turning.
Explanation:
when the earth turns it causes the sun to move from one part of the sky to the other. The earth revolves around the sun. So when it become night time for example, the sun is just on the other side of the earth.
A plant fuels its photosynthesis in part by utilizing carbon dioxide. In doing this, it absorbs carbon dioxide to produce oxygen as a waste product, thereby helping to reduce atmospheric CO₂.
Hope I could help!
