60. Which of the following is/are a biotic factor in an ecosystem?
A. the food chain
B. inorganic nutrients
C. water availability
D. temperature
E. All of the choices are biotic factors in an ecosystem.

Question

60. 	Which of the following is/are a biotic factor in an ecosystem? 
A.  	the food chain
B.  	inorganic nutrients
C.  	water availability
D.  	temperature
E.  	All of the choices are biotic factors in an ecosystem.

anonymous · Answer

Answer: A. the food chain is a biotic factor

inorganic nutrients isn't because it was made.
water is not a living thing
temperature isn't a living thing
that proves that the answer is not all of the choices are biotic factors in an ecosystem