D: All the variables are controlled except one.
Answer: more accuracy in a lot percatage
Explanation:
Answer:
The phenomenon seen by the students is Osmosis.
Explanation:
Osmosis is the movement of molecules from higher concentration to lower concentration through a semi-permeable membrane. This type of movement of molecules occurs in the body cells. When the concentration of molecules is higher outside the cell than the inside, the molecules goes inside the cell through semi-permeable membrane.
The answer 4 the above question sounds like a vitamin D deficiency.
