Question

which step of the water cycle is when water falls back to earth?
collection
precipitation
evaporation
condensation
question 9
1 pts
what is the main source of energy for the water cycle?
the sun
the wind
the moon
the ocean

Explanation:

The stage of the water - cycle when water falls back to Earth is precipitation. The main source of energy for the water cycle is the sun, which provides the heat for evaporation. Evaporation turns water into water vapor which then condenses and forms clouds, and eventually leads to precipitation. In the second question, the ocean is not the main energy source, the wind is a result of uneven heating and not the primary energy source for the water cycle, and the moon's influence is mainly on tides, not the water - cycle energy source.

Answer:

Question 1: precipitation
Question 2: The sun