What is an effect of excessive amounts of cfc's released into the air?

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 any resource, such as wood or solar energy, that can or will be replenished naturally in the course of time;

Ansradar; im guessing here; good luck : )