There has only been one Ice Age.
a. true
b. false
b. false
You might also like to view...
Most public rangelands are in poor condition due to
A. Overcrowding of private livestock B. Excessive populations of wild ungulates C. Too many publicly-owned animals on public lands D. The lack of water E. Excessive urban settlement in the west
Tropical storms and associated floods have greater impacts in poor countries that have experienced ________
A) deforestation B) hurricanes C) soil erosion D) desertification E) forest fires
The usual size of an air mass is:
A) around 1000 km across. B) at least 1600 km across. C) at most a few kilometers across. D) between 100 and 200 km across.
Along ________ new ocean floor is formed by upwelling flows of magma, whereas along ________ old oceanic crust is destroyed
A) oceanic trenches; archipelagos B) subduction zones; mid-ocean ridges C) archipelagos; oceanic trenches D) mid-ocean ridges; subduction zones