You'll find lots of clouds over tropical climates and practically no clouds over desert climates. There is heavy rainfall in tropical climates and therefore relatively high rates of evaporation. High rates of evaporation leads to condensation and cloud formation. Desert climates like the Sahara Desert that only receives a few inches of rainfall per year would not have clouds due to the lack of surface water for evaporation.
A jar contains 12 marbles 4 red 3 white 5 blue. A marble is randomly selected, it's color record, and then the marble is returned to the jar. A second marble is randomly selected. Find the probability that both marbles selected are blue
