I think it’s number 2 but I could be wrong, I know 1,3, and maybe 4 are in living things
I think it might be B but I am not sure
Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure.
Answer:
plasma
Explanation:
The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.
