Author Question: In 1982, about 8 percent of the trees in West Germany were damaged from pollution. One year later, ... (Read 24 times)

cnetterville · **on:** Jul 2, 2018

In 1982, about 8 percent of the trees in West Germany were damaged from pollution. One year later, the figure jumped to 34 percent and to 50 percent by 1984 . This is an example of the _________ effect.

A. greenhouse
B. geometric equation
C. threshold
D. photosynthesis

Question 2

Americans use about __________ percent of all energy consumed for transportation.

Fill in the blank(s) with correct word