As air pressure decreases, what happens to the density of the atmosphere?
A. increases
B. decreases
C. stays the same
D. not enough information to tell

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?