The greenhouse effect is a problem of atmospheric quality ...

[lracut11]

The greenhouse effect is a problem of atmospheric quality theoretically caused by
 
  1. Excessive carbon dioxide buildup due to burning of fossil fuels.
  2. Radon and radioactive gases.
  3. Sulfur dioxide from industrial sources.
  4. Use of chlorofluorocarbons in air conditioners, refrigerators, and aerosol cans.

Question 2

Which of the following children is at highest risk for lead poisoning?
 
  1. Amy Allen, a 13-year-old Caucasian who lives with her mother and sibling in an inner-city housing project that was built during the Clinton administration
  2. Bobby Benson, a 6-year-old African-American who lives with his parent in a modest suburban home built in the early 1980s
  3. Camille Carson, a 2-year-old Caucasian who lives with her maternal grandmother in a poor neighborhood built in the 1950s
  4. Danny Diego, a 10-year-old Hispanic who lives with his parents in a small apartment built in 1975

[jesse.fleming]

Answer to Question 1

ANS: 1

Answer to Question 2

ANS: 3

[lracut11]

TYSM

[adf223]

Gracias!