1. which is a form of precipitation A. fire B. snow C. UV rays D. air 2. what does not belong to the group A. rain B. hail C. smoke D. snow 3. the earth called the blue planet because A. it is mostly covered grass B. its mostly covered soil C. 1/3 of it is up of water D. 3/4 it is up of water 4. it is the water - part of earth . A. stratosphere B. atmosphere C. hydrosphere D. all of the above 5. it is continuous movement of water in earth surface A. water cycle B. water vapor C.water droplets D. evaporation