Polluted water can contribute to
a. drought
b. increased co2
c. deforestation
d. glacial melting

Polluted water can contribute to : deforestation

Water is the most essential substance that needed by the trees within the forest to sustain their living.

When the source of water is contaminated, the trees wouldn't be able to gain enough nutrients for their photosynthesis, which will eventually kill them.

C. deforestation is your answer 

Humid continental climate is found in the interior of continents between the 30 and 60 degrees latitude, but usually above the 40 degree line.   40 degrees north of the equator means less direct sunlight and therefore less warmth.   this climate is mainly found in the northern hemisphere since there are no major landmasses in the southern hemisphere.  if you live in northern indiana, you know all about humid continental because that is the climate type you have!

Answer light in color; silica-rich;