Earth's precession
A) means that Polaris is always the North Star.
B) is responsible for changes in Earth's eccentricity.
C) can slowly change the climate difference between summer and winter in the Northern Hemisphere.
D) has the same time period as changes in obliquity.
E) all of the above
C
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With only 2% of its forests remaining, which of the following countries has gone from tropical paradise to ecological disaster?
A. Jamaica B. Bermuda C. Haiti D. Cuba E. Virgin Islands
Can the current increase in carbon dioxide level in Earth’s atmosphere be attributable to natural variation and not human activity? Why or why not?
What will be an ideal response?
Just above cumulus clouds, you would expect to find?
a. ?a stable layer. b. ?an unstable layer. c. ?a conditionally unstable layer. d. ?unusually strong horizontal winds. e. ?convective instability.
Under what conditions will coastal waters become isohaline?
a) Waters are so deep that they are unaffected by the input of freshwater from rivers b) Waters are so shallow that tidal variations cause the freshwater and saltwater to mix c) Waters are warm and therefore have a low density d) Waters are cold and therefore have a high density e) Waters are so still that salt water and incoming freshwater are unable to mix