Why are some conservation biologists concerned that the polar bear will be extinct by 2050?

Suppose you were the commissioner of corrections for your state. which correctional activities might come within your domain? which mostly would not

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen