what is science science can study space by observing. they can study humans and how the body works by testing stuff on it and observing it.
Animal structure and behaviors rabbits are different colors so they can blend in they have a lot of fur so they can stay warm baboons have strong arms and legs so they can climb trees to get food sharks have big mouths and a lot of teeth so they can get bigger prey.
reasons why we should use models to study something is so we can have an understanding of what it looks like or see how it works
a system is like a bunch of different parts that work together an example is the circulatory system it helps pump blood threw your body
A car is an example of a system cause all the pieces inside the car have to work together to get it to work