Answer:
x=20
Explanation:
3x-10+5x+30=180 (co-interior angles=180)
8x+20=180
8x=160
x=20
As compared to the rocks that makeup the crust, earth as a whole is a rock nighjhaaaaaaaaa
Continental Polar and Maritime Polar ; Polar had a direct connotation with the cold. :)
Deserts are A) dry with little organic matter. Although it seems that D might be correct in fact it is not because desert soil is not totally unable to support plant life because in fact some plants grow in the desert and especially following a rain storm the desert can bloom with plant life.