Question

tundras are basically very cold deserts. they usually get less than 10 inches of precipitation per year. in winter, tundras are freezing cold, with temperatures below 0°f. in summer, they remain cool, usually staying below 50°f. the tundra is covered in ice and snow for most of the year. when the surface ice and snow melt, they create marshy wetlands and ponds, but a layer of soil beneath the surface stays frozen year - round. this layer of soil is called permafrost.
which of these is true?
choose one option
a tundras are colder in the summer than in the winter.
b tundras receive a large amount of precipitation.
c tundras sometimes warm up enough for the surface ice to melt.
d tundras sometimes warm up enough for the permafrost to melt.

Explanation:

• Option A: The text says winters are below 0°F and summers stay below 50°F, so summers are warmer than winters. A is false.
• Option B: Tundras get less than 10 inches of precipitation per year, so "large amount" is wrong. B is false.
• Option C: The text states "When the surface ice and snow melt...", so tundras do warm enough for surface ice to melt. C is true.
• Option D: The text says permafrost stays frozen year - round, so it doesn't melt. D is false.

Answer:

C. Tundras sometimes warm up enough for the surface ice to melt.