Question

cell theory is a set of three basic rules that define what makes something alive: 1. all living things are made of one or more cells. this includes a single - celled bacterium or a human made of trillions of cells. 2. cells come from other living cells. new cells dont just appear out of nowhere. they are created when existing cells divide. 3. cells are the basic structures and functions of life. they do all the important jobs in a living thing, like carrying oxygen and fighting germs. how do new cells form? from other living cells; from decaying matter; from the air

Explanation:

Cell theory states that new cells come from other living cells through cell - division. This is a fundamental concept in biology. Decaying matter and air do not generate new living cells in the context of cell theory.

Answer:

From other living cells