Why is differentiation important to multicellular organisms

If vegetable oil is made out of veggies, then what is baby oil made out of?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?