I believe that the answer is biosphere<span />
<span>Answer B
A decrease in the intensity of the light would interrupt THE EMISSION of energy which would reduce the electrons diminish its brightness, which the emission of electrons by a material when it impinges on him an electromagnetic radiation (visible or ultraviolet light, generally included in the term other types of interaction between light and matter and leads to reduction</span>
Variation in temperature
Variation in light
and which compost was applied
Pretty sure its non-poaler (definitly sure) :)