Chronic exposure of tree leaves and needles to air pollutants can?

Question

a. cause a waxy coating to build up.

b. increase nutrient uptake.

c. cause leaves or needles to turn bright red and drop off.

d. prevent excessive water loss.

e. increase the chance of damage from diseases, pests, drought, and frost.

Answer 1

"e. increase the chance of damage from diseases, pests, drought, and frost." is correct.

"Chronic exposure of leaves and needles to air pollutants can also break down the waxy coating that helps prevent excessive water loss and damage from diseases, pests, drought and frost. "In the midwestern United States crop losses of wheat, corn, soybeans, and peanuts from damage by ozone and acid deposition amount to about $5 billion a year". (Miller 498)"

http://healthandenergy.com/air_pollution...

This site shows the damage generated by the different sorts of air pollutants:

http://www.ext.vt.edu/pubs/nursery/430-0...