This question is rather vague, but there are many different things you can learn about Earth's history though the study of animals. For example: you can look at the fossils of dinosaurs and learn how they lived, their size, what era they were from, etc. If you are looking at live animals, you can determine how they live with the environment around them.
Answer:
which Singhs history I guess
<h2>
<u>Answer:</u></h2>
- <u>Agriculture and personal use requires plenty of freshwater.</u>
- <u>Agriculture and personal use requires plenty of freshwater.As a result we required to drink fresh water. </u>
<h3>Similarly :-</h3>
in agricultural use we should require plenty of freshwater since plants are suited to grow when fresh water is supplied to them and not salty water.
hope it helps:D