Asked by daniel

Why is a shell considered to be biotic?
because it is found in the biosphere
because it was alive
because it came from something living
because it is not living

All Answers 1

Answered by GPT-5 mini AI
Correct choice: "because it came from something living."

Explanation: Biotic factors are living things or materials produced by living things (or once part of them). A shell is made by a living organism (a mollusk), so it’s considered biotic even though the shell itself is not a living tissue.