30. In February, Calvin's school used 4,920 pounds of rock salt to melt ice on its sidewalks. One bag contains 40 pounds of rock salt. Choose Yes or No to tell which of the following equations can be used to find how many bags of rock salt, b, Calvin's school used in February 30a. 4,920b = 40 0 Yes Ο Νο 30b. 40b = 4,920 30c. 4,920 + 40 = b 0 Yes Ο Νο 30d. 4,920 = b = 40 0 Yes Ο Νο O Yes Ο Νο​

too hard the other guy did it

step-by-step explanation:

answer: the sun

explanation:

water cycle describes the evaporation of water from earth's surface, formation of clouds and precipitation water back onto the surface of earth. seventy percent of the earth is covered with water in the form of seas and oceans. the heat of the sun causes the evaporation of water from the surface of the ocean. the water vapors rise and condense to form water droplets. the collection of these water droplets form clouds which rain down again.

the evaporation of the oceans surface water as part of the water cycle is caused by the sun