The possible solutions to the groundwater crisis include (choose all that apply) growing less water intensive crops
increasing recharge
more efficient agriculture using less water
reducing overdraft
using a combination of sciences to understand what's happening and to -fix the problem
governance of water as a resource
working together as a world community
better irrigation methods

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!

The correct answer is:   [b]:   "physical systems" .