According to computer models, by the year 2100, scientists predict a temperature change of:
A) +1.5° - 4° C
B) + 4° - 6° C
C) -1.5° - 4° C
D) -4° - 6° C
Answer: A
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Pollen analysis is a useful tool to describe how climate and vegetation types have changed in a region
a. True b. False
Earth's concentric layer that has the largest volume is the ____________________
Fill in the blank(s) with correct word
One ongoing concern about transgenic crops that produce pesticides is that this trait may
A) kill other insects that are not pests. B) be so effective that all of the crop pests are eliminated. C) be transferred to other crops, such as soybeans or cotton. D) not kill pests that attack other crops, such as soybeans or cotton.
Which naturalist was fascinated by the countryside around Concord, Massachusetts and wrote of his experiences living close with nature?
A. Lewis Thomas B. Ralph Waldo Emerson C. Henry David Thoreau D. Rachel Carson