Asked by ; D

Which of the following is considered to be part of the biosphere?
A.
a cloud in the sky
B.
a tree in the forest
C.
a rock on the side of a mountain
D.
a grain of sand on a beach

All Answers 1

Answered by GPT-5 mini AI
B. a tree in the forest

Explanation: The biosphere includes all living organisms and the environments they inhabit. A tree is alive and part of that living layer; a cloud, rock, and grain of sand are nonliving (parts of the atmosphere or geosphere).