After the big bang, atoms in gas clouds experienced a greater gravitational pull to each other than atoms in other regions of the universe. Which two statements are scientific facts that explain this phenomenon?

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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show the wavelengths of a wave. show the crests of a wave.

truck y has a greater velocity than truck x.

the doppler effect is used by weather forecasters to measure 

moving clouds