a. could logically be pegmatitic granite. b. crystallized at depth from intermediate-composition magma, then rose to the surface and became a lava flow. c. contains plagioclase crystals that are called lapilli. d. formed as the lava flow that produced it was quenched in ocean water.

Population of this city. also, look for information on available public transit, bike-sharing, and other commuting options. use the information you find and write about it promoting alternative transportation

Migration people get up and go cause they feel it is best for them 

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!