Which statement accurately describes the relationship between the brain and addiction? a. normal activities produce heightened responses once receptors are reduced. b. the brain reacts to excessive dopamine levels by increasing the number of dopamine receptors. c. a higher amount of addictive chemicals are needed to get the same high when fewer receptors are present. d. all drugs act on dopamine synapses in the same way.

Describe three ways in which technology has treat the flu

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).

What are possible challenges for cyberbullying? the answer is sample response: possible challenges of cyberbullying have to do with nonbelievers, or people who do not think cyberbullying is a real problem. technology makes it hard to stop bullies, and some people do not want to take responsibility.