All studied biomes
6. What animals live in Arctic and Antarctica.
Arctic-reindeer, polar bear, Arctic fox, narwhal, walrus, seal, ox, moose, orca, and snowy owl
Antarctica- blue whale, emperor penguin, weddell seal, octopus, sea star
7. Why is tundra so wet? The warmer weather in summers causes a layer of permafrost, ice that never goes
away in the ground, to melt, creating bogs and shallow lakes that don't drain.
8. What is snowline? A snow line is the point above which snow and ice cover the ground throughout the year.
The actual snow line may seasonally be significantly lower.
9. What is treeline (timberline)? The treeline is the zone where conditions become too harsh to support growth
as large as trees. When viewing a mountain from the side, this line is visible as the place where forests stop and
snow, ice and rock begin. Sometimes there is a transition called the krumholtz line, where trees become stunted
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