The correct answer is D, white blood cells.
We know that red blood cells deliver nutrients and are not apart of the immune system; platelets are responsible for coagulation, which has nothing to do with the immune system, and plasma is a substance that, again, has nothing to do with immunity. White blood cells are the only things that fight disease (antibodies are white blood cells)!
I hope I helped!
(By nothing I meant very little to none).
Answer:
An animal nutritionist specializes in the dietary needs of animals in captivity, such as pets, farm animals, and zoo animals.
Explanation:
hope this helps
Answer:
It contains 2 or 3 ppm of oxygen concentration.
