Posted by Diya Patel 1 month, 2 weeks ago
he body is made up of many, many millions of cells which you can not see unless you use a microscope. Special cells come together to make an organ.
An organ is a complex structure within the body. It has a special job or jobs to do.
A body system consists of a number of organs which work together to carry out a special job.
The animal body is made of 9 systems:
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