Which of the following would be least effective in controlling soil erosion caused by wind and water? a) planting windbreaks b) removing crop stubble from ground c) using conservation tillage d) creating agriculture water ditches e) planting cover crops

The correct option is: REMOVING CROP STUBBLE FROM GROUND.
All the other options given will reduce wind and water erosion to some extent but removing crop stubble from the ground will not help in erosion reduction. Removing crop stubble will open up the ground and enhance erosion.

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!