What is a biotic factor? an organism that is or was living a nonliving thing a type of living organism that cannot reproduce a type of matter that originates from the earth's core

The correct answer is -

An organism that is or was living.

Biotic factor corresponds to any living /life form that is present in an ecosystem.

In other words, it represents the living component such as plants, animals, bacteria etc.

On the contrary, abiotic factors are the non living components of the ecosystem.

Thus, option first is the right answer for the biotic factor.

its 42

i say its d?

answer; ///(b) it is composed of four protein chains and four heme groups;