Living things come from other living things through either sexual or asexual reproduction.

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book, and a chromosme is compared to chaper in the book, then what might be compared to a paragraph in the book?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.