why is a shell considered to be biotic?\nbecause it is found in the biosphere\nbecause it was alive\nbecause…

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

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

Answer

Answer:

C. because it came from something living

Brief Explanations:

Biotic factors are related to living organisms. A shell comes from a living organism (like a mollusk). Just being in the biosphere (A) isn't the key reason. The shell itself wasn't alive (B is wrong). And being not - living (D) contradicts the biotic concept. So, it's biotic because it came from a living thing.