Long-term data on global carbon dioxide levels can be obtained from analyzing air trapped in
A) rocks
B) ice cores drilled out of the Antarctic ice sheet
C) the upper atmosphere
D) deep ocean sediments
B
Physics & Space Science
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Mars and Mercury are similar in size, and Mercury is even denser. Why then is it Mars that has more atmosphere?
What will be an ideal response?
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Consider a magnifying glass with a power of 3.0 D
(a) What is the maximum magnification for a person with a near point of 25. cm? (b) What is the magnification when viewing with a relaxed eye?
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The two ends of a 2.00-? resistor are connected to a 8.20-V battery. What is the current through the resistor?
a. 16.4 A b. 0.244 A c. 4.10 A d. 10.2 A e. 6.20 A
Physics & Space Science
How many Earth years does it take Pluto to orbit the Sun?
A. 248 B. 0.2 C. 0.5 D. 2012 E. 10
Physics & Space Science