WONDER #440: How Can Down Warm You Up?

Question 1 of 3

Most birds migrate to find what?

1. warmth
2. food
3. sand
4. oceans

Question 2 of 3

The loose structure of down feathers traps what?

1. cheese
2. air
3. sand
4. sunlight

Question 3 of 3

The thermal insulation properties of down basically disappear if down gets what?

1. wet
2. dry
3. hot
4. cold

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