Ake had a great time snowboarding with his friends. which of these is a likely result of his activity? (1 point) an increased level of dopamine that doesn't reduce brain signals a decreased level of pleasure responses that doesn't reduce brain receptors an increased level of addiction that is created by dopamine production a decreased level of mental cognition, prompting a desire to repeat the experience

The correct answer is this: AN INCREASED LEVEL OF DOPAMINE THAT DOES NOT REDUCE BRAIN SIGNALS.
Dopamine is a neurotransmitter, a compound that is released by the brain and it is associated with attention, addiction, motivation etc. Getting involved in physical exercise increases the amount of dopamine in one's body in an healthy way. 

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.