If a conditioned stimulus (cs) is presented without further pairings with the unconditioned stimulus (us), the cs will gradually lose its capacity to elicit the conditioned response. this is the definition of:

This is the definition of respose extinction.

Explanation:

For example, you taught your dog to sit everytime you grab his leash to go for a walk. Over time you started to let him run in the backyard to exercise, and you show him the leash to just call his attention. One day you grab the leash to take him for a walk, and you realize he does not sit anymore at the stimulus. This is a case of response extinction.        

try rubbing alcohol

explanation:

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .