scientist 1’s viewpoint would be weakened by which of the following observations about comets, if true?

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

Which water sources contribute to a river system? check all that apply. groundwater lakes rivers streams watersheds