Where does most of the energy come from in a shady section of a stream

Dead leaves

Explanation:

Small streams that remain shaded in any area (due to dense canopy) are unable to get sufficient light and hence they depend for their energy on other resources.  

Usually, a shady stream is found in a temperate environment, where interlocked canopies block the path of sun light. However, ample amount of leaves (as food base) are supplied to these streams. Biological communities in these shady streams feed upon the leaves and release fine organic particle and oxygen with in the stream thereby making it oxygenated and cool.  

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.

i believe your answer would be c.. : )