Which of the following is an example of point-source pollution? A. Water from a sewage treatment plant
B. Fertilizer from agricultural runoff
C. Salt from roads
D. Acid from abandoned mines

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!

Answerseafloor spreading;

Well, a and b together would be negative. b alone would also be negative.

The answer to the first one is barometer.