Question

4. Which of the following are common to all of the
chemical cycles? Select all correct answers.
a. reservoirs and processes
b.an atmospheric component
c. photosynthesis and respiration
d. living things as a reservoir
e. the sun as a source of energy
f.can be affected by human activities

Answer 1

d. living things as a reservoir

Answer 2

d.  living things as a reservoir

e. the sun as a source of energy

f. can be affected by human activities

Common elements to all of the chemical cycles

Living things as a reservoir, the sun as a source of energy and human activities are the common elements present to all of the chemical cycles. These factors causes direct impact on the chemical cycle so we can conclude that option d, e and f are the correct statements.

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