As of 2015, what is the approximate CO2 level in Earth’s atmosphere?
a. ?100 ppm
b. ?200 ppm
c. ?400 ppm
d. ?800 ppm
e. ?1200 ppm
ANSWER: c
Environmental & Atmospheric Sciences
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In the interior of Antarctica, the average annual precipitation is only about two inches of water in the form of snow. As a result, the Antarctica biome is a ________. One word answers only.
Fill in the blank(s) with the appropriate word(s).
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Personal motion detection in humans takes place in the
A. nose. B. glands. C. spleen. D. ear.
Environmental & Atmospheric Sciences
How do we know that earthquakes are the result of movement along faults?
What will be an ideal response?
Environmental & Atmospheric Sciences
Which of the following are NOT common in braided streams?
a. point bars b. clay plugs c. meander scrolls d. all of the above
Environmental & Atmospheric Sciences