4
It is made from a group of cells with a similar structure and function, which all work together to do a particular job.
5
It is made from a group of different organs, which all work together to do a particular job.
6
It is made from a group of different tissues, which all work together to do a particular job.
7
They are the basic building blocks of all animals and plants. They are so small, you need to use a light microscope to see them.
