Phemolphthalein changes colour.(i forgot from which to which) This is because calcium hydrroxide is basic.
Build up of FRICTION has been used to try to predict earthquakes, should be the write answer.
Answer:smooth and involuntary
Explanation:the sphincter papillae are muscles responsible for narrowing the pupil, while the dilator papillae makes the pupil larger. Both of them are smooth types of muscles, that are controlled by nerves, sending signals from the brain about the light conditions.
Cells dont have anything inside because the cells helps us
Physical structures..........
