<h3><u>Answer;</u></h3>
<u>The second part of the cell theory</u> which states that the cells are the basic units or the smallest units of living things.
<h3><u>Explanation</u>;</h3>
- <em><u>Cell Theory is the basic theory of biology that describes one of the major characteristics of life. All living things have cells.</u></em>
- The first part of The Cell Theory states that all living things are made of cells.
- <u>The second part of the cell theory states that cells are the basic units or the smallest units and function of living things.</u>
- The third part or the third statement of The Cell Theory states that the cells only come from or originates from living cells.
The brain it sends messages to the spinal cord which aids for the movement of the body
spinal cord aids for movement
A blood vessel is a tubular structure that carries blood through tissues and organs.
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Answer:
the work done by you on the machine is called input work. the work done by a machine is called output work.