Signup Login
Download image: Choose a size... 300x250px Medium Rectangle 336x280px Large Rectangle 468x390px Full Rectangle 728x606px Leader Rectangle
The average area covered by snow in North America has declined since 1972. This could indicate an increase in North American temperatures and potential climate change.
The average area covered by snow in North America has declined since 1972. This could indicate an increase in North American temperatures and potential climate change.