Why do drugs have a greater impact on teenager's brains than adults? a) because teenagers have smaller brains b) because teenagers brain are still growing c) because teenagers have less body mass

It is B) because teenagers brains are still growing.

B. Because teenagers are still growing. Kind of the same for caffeine like coffee.

The answer is b. increased blood flow reduces nerve sensitivity

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.