Which soil horizon contains no organic material and is composed of parent material?
A) A horizon
B) B horizon
C) C horizon
D) O horizon
Correct Answer:
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Q56: Which organism lives off remains or wastes
Q57: Which organism feeds on dead organisms?
A) detritivore
B) autotroph
C) producer
D) carnivore
Q58: What is required for aerobic respiration to
Q59: What is produced by aerobic respiration?
A) carbon dioxide
Q60: Which term refers to an organism that
Q62: Which ecosystem has the highest average net
Q63: Which of the following correctly describes humus?
A) the
Q64: Through what is soil most directly produced?
A) movement
Q65: Which ecosystem has the lowest level of
Q66: What refers to the zones that comprise
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