The three main areas of study in science are

Hi! The answer will be under “Explanation”

Explanation:

The three main area of study in science is Earth, Life, and physical science.

At the bottom I attached a picture of the three main areas of study in science.

Earth science is about the world and nature.

Life cycle is mostly about animals.

Physical science is about chemicals.

Hope this helps! :)

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.