Explanation: Cell membrane protects animals cells from harmful chemicals. Explanation: The cell membrane is a tough covering composed of the phospholipids and proteins and forms a bilayer around the cells
A cataract is a clouding of the lens in your eye that affects your vision. Cataracts are very common in older people, and by age 80, more than half of all Americans either have a cataract or have had cataract surgery.
Answer: Sprinters who run with prosthetic legs run in the outside lanes. They can't choose to run in the races above 200-400 meters because that is their capacity. They can't run above that speed because the prosthetics won't allow them to do the same
