Unlike naturally occurring sources of acid precipitation, ...

[karen]

Unlike naturally occurring sources of acid precipitation, anthropogenic sources of acid precipitation
 
  A) are more concentrated in industrial and agricultural areas.
  B) result in the extended release of radon gas.
  C) include sulfur oxides and nitrogen oxides.
  D) occur at higher levels of pH.

Question 2

The light bleached color of dying coral in marine ecosystems is most likely the result of
 
  A) exposure to increased levels of sunlight.
  B) increased ocean temperatures.
  C) increased pH of the ocean.
  D) shifts in ocean currents.

[lkanara2]

Answer to Question 1

A

Answer to Question 2

B

[karen]

Gracias!

[amit]

Excellent