In the Coastal Forest of Oregon an Area Was Clear-Cut

Multiple Choice

In the coastal forest of Oregon an area was clear-cut for logging. Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began. What is the best explanation for the death of the trees?

A) The trees at the edge of the forest were more prone to disease
B) Increased sunlight, wind and temperature negatively affected the trees
C) The roots of all of the trees were damaged
D) Nitrogen fixing bacteria in the roots of the trees were killed