I get lots of rain where I live, what exactly causes it?
It is liquid water in the form of droplets. Usually happens when the droplets have condensed!
What does condensed mean?
It means got smaller. After condensed, it becomes heavy enough to fall under gravity.
So it goes up as a gas, then condenses and becomes heavier.  Cool! What makes the water go up in the first place?
Very cool! It is moisture moving along three-dimensional zones of temperature and moisture contrasts.
Whoa. I didn't know rain had to do with different dimensions.
Yeah, it is pretty crazy. Rain is responsible for depositing most of the fresh water of the earth.
Rain
It provides suitable conditions for many types of ecosystems.