The red blood cells were placed into an isotonic solution. Water moved into and out of the cells to maintain homeostasis.
Only about 3 percent of the worlds water is fresh, and even less than that is usable, because most of it is locked up in glaciers or in permanent snow fields.
The correct answer is D.
Answer:
it's A
Explanation:
it's explaining your idea.
12/44 = 0.2727
(X100)
= 27
( therefore the percent mass of carbon in carbon dioxide is 27%)
