A geologist studies an ocean volcano producing oceanic crust. Though he cannot sample the rock, what can he infer is the dominant composition of the rocks? a

silica, magnesium, and iron
b

silica and aluminum
c

aluminum and iron
d

aluminum, magnesium, and iron

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!

Developed countries will see a decrease in natural resources, because their population will decrease.

Pretty ssure the answer re her answer is b hope this : )

1. d: oceanic crust is thicker and contains a lot of granite2.d: where two continental plates are colliding  3.b.contour boundaries4.b.plates that are attracted to each other by gravity5.a.as two continental plates collide along a convergent boundary, mountains are formed.