Glaciers can only form when a. there is an ice age. b. there is a u-shaped valley in the mountains. c. the amount of snow exceeds the amount of rain. d. more snow falls than melts.

By the triangle inequality theorem, if two sides of a triangle have lengths of 3 and 7, what are all the possible lengths of the third side? a) 3 < x < 8 b) 3 < x < 7 c) 4 < x < 10 d) 5 < x < 7

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.

The language and religion of france developed from which people? a. the franks b. the gauls c. the anglo-saxons d. the romans