What kind of air moves downslope into a valley after sunset in mountainous areas?

a. land breeze

b. warm or hot

c. cool or cold

d. sea breeze

There are 4 red balls, 6 white balls, and 3 green balls in a bag. if one ball is drawn from the bag at random, what is the probability that it is not white?

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

Which type of seismic waves are confined at the surface