Polar bear numbers set to fall.
Courtland
Rachel
R
D000818:Animals; D001110:Arctic Regions; D003247:Conservation of Natural Resources / Q000331:legislation & jurisprudence* / Q000639:trends; D017752:Greenhouse Effect; D046448:Ice Cover; D038622:Internationality; D011156:Population Density; D013997:Time Factors; D014481:United States; D001503:Ursidae / Q000502:physiology*