posted by mysterychicken .
29. CFCs are a problem because they
a. have been released in large quantities in the past
b. break down to reactive free chlorine atoms
c. attack ozone molecules in the upper atmosphere
d. all of the above
10. Ozone depletion in the atmosphere
a. leads to the formation of acid precipitation
b. leads to a rise in chlorofluorocarbons
c. allows more harmful radiation from the sun to reach the earth
d. both b and c
So 10 is just C?
PS>Why were we blocked yesterday?
I don't know anything about that.