Why do u feel tossed around in a roller coaster

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)

Pulmonary arteries carry highly oxygenated blood. true or false?