Prepositions indicate direction, time, location, and spatial relationships, as well as other abstract types of relationships.
Prepositions indicate relationships between other words in a sentence.
Many prepositions tell you where something is or when something happened.
As the name suggests they generally tell position if something. Like, behind, front, on, at etc.
What do you mean? are we supposed to have read that book or is that something else?
Answer: Eating is our source of energy and is crucial to our survival. If we didn’t eat for a time as short as three days, then we wouldn’t survive.
Explanation: this is just a thesis and the beginning to your piece, but it should be easy to build off of. Good luck!