Question

Which of the following involves only abiotic factors?

A. a large rock being weathered by wind and rain
B. an otter using a stone to break open a sea urchin
C. a spider building a web in the corner of a building
D. a pine tree absorbing light from the Sun

Answer 1

A. a large rock being weathered by wind and rain.

Answer 2

A. This is because neither a rock, wind, or rain is a living organism.