Would you expect the air pressure in a valley that's below sea level to be higher or lower than air pressure at sea level

What evidence is there that convection occurs in earth’s troposphere?

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.