What is a saturated solution in your own words,

A saturated solution is a solution that has the maximum amount of solute that is capable of being dissolved

Explanation:

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.