Prolonged and constant use of tobacco can weaken the user's immune system and increase the risk of many diseases. which disease makes the air sacs in the lungs less elastic, reducing their ability to absorb oxygen? a. chronic bronchitis b. emphysema c. lung cancer d. oral cancer

The heart and lung are located in which cavity ? thoracic

Matching: 1. first used by europeans as a local anesthetic; now abused for its euphoric effects 5 marijuana 2. found in coffee beans, tea leaves, and cocoa beans 2 heroin 3. prescribed for pain involving serious injury or surgery 1 morphine 4. illegal derivative of morphine that is sold on the street as a white powder 6 caffeine 5. can evoke feelings of terror and panic 4 lsd 6. causes user to experience a conscious dreamlike state 3 cocaine

According to the dietary guidelines, you should increase your consumption of calcium, fiber, potassium, and vitamin d. these nutrients are mainly found in: a. fruits b. whole grains c. vegetables d. all of the above