Which of these is an example of a biotic factor?

A Hot desert Sun

B Mojave River

C Arid desert air

D Mojave grasshoppers

Answer: D, the Mojave grasshopper

Biotic is something living or once living, the Mojave grasshopper is a type of grasshopper and they are considered living organisms so they are an example of a biotic factor

Something abiotic is something nonliving such as air, rocks, water, etc. In this question the answer choices A, B, and C are considered abiotic matter, not biotic

D Mojave grasshoppers. An ecosystem is a biotic community together with its physical environment, considered as an integrated set, however factors of such environment count and are usually living things.