Which cells we don’t see no answer choices to really give a answer
Concentration gradient across the membrane. Proteins in the membrane allow specific molecules through, passively.
D. The center or eye of a hurricane is warmer than its surroundings. I'm pretty sure that's right or it's c!
Answer: osteoporosis
Explanation: Osteoporosis causes bones to become weak and brittle — so brittle that a fall or even mild stresses such as bending over or coughing can cause a fracture.
