The picture shows four beach ball at different locations at a pu blip swimming pool . An arrow indicates the direction a ball moving

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: