If you represented each star by a grain of sand, how much sand would it take to represent all the stars in the universe?

a. more than all the sand on all the beaches on earth
b. all the sand on the beaches in the united states
c. all the sand on the beaches of california
d. all the sand on miami beach
e. all the sand in a typical playground sandlot

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !