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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


Sagot :

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

Answer:

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