James is using a microscope to look at some bacteria After a few minutes, he notices that one of the cells has split into two identical cells which part of Cell Theory does his observation support? • Cells are the basic unit of life
All living things are made of cells
All cells come from pre-existing cells
There are two types of cells, prokaryotes and eukaryotes

C

Explanation:

describe matter a earth

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.