Some plants of the tundra can perform photosynthesis at lower than normal light levels.
Soil that stays frozen for two or more years
What happens to plants when they freeze
Permanent frost
Any frozen soil
Cold
Treeless plain
Lots and lots
Barren
Tundra can be found on the tops of some mountains.
Keeping their extremities relatively cold
Special bones in their nose that help them save water
All of the above
Dense fat, with thick fur that covers all external surfaces
10%
30%
20%
50%
The animals try to keep up with the newest styles
Shedding one color coat for another helps them stay camouflaged in most seasons
The changing fur has no real purpose
The cold causes fur to change colors