Many years ago, scientists working with cells developed what is now known as the cell theory. The cell theory states: โ All living things are composed of one or more cells. โ Cells are the basic units of structure and function in an organism. โ Cells come only from the reproduction of existing cells. Which of the following observations best supports the cell theory?
Cells come in a variety of shapes and sizes.
Cells have different names for different structures.
Cells can live a very short time.
Cells from animals only create other animal cells.
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