Which of the Following Is True Regarding Possible Impacts on Ecosystems

Multiple Choice

Which of the following is true regarding possible impacts on ecosystems that might occur as a result of climate change?

A) studies have demonstrated there will be no impact on plant distributions.
B) the prairie grassland/northern forest boundary is now in central Nebraska and is unchanging.
C) the prairie grassland/northern forest boundary is expected to move northward with increasing temperatures.
D) beech trees in eastern North America will not change in distribution.
E) the mountain treeline will not move higher in elevation.