Answers

2016-04-19T21:22:11+05:30
There are so many reasons. some of them are

*cell make tissue and tissue make organs that control our body functions
*cell consist of many things that help to function nerves
and so mny other reasons
I hope this will help you

please please please mark it as brainliest I need it please
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2016-04-19T21:24:10+05:30
They are the starting units for a tissue to form and the tissue forms the organ which in turn give rise to the organsystem and finally to a body.




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