A. Carbon
It's carbon because it is in all plants and fossil fuels. Hope this helps and is correct.
This is a diagram of a paramecium.
Answer:
I think a gene is something that makes look how we look
Explanation:
Animals, including plants and some other microbes, get energy directly from the sun. But when they’re INDIRECTLY getting energy from the sun, they eat other organisms, like plants and/or meat.