Which two factors act together to cause changes in the Earth-Sun distance at the seasonal solstices and equinoxes?
A) the obliquity and the eccentricity
B) the precession and the Milankovitch cycle
C) the eccentricity and the precession
D) the Milankovitch cycle and the obliquity
Answer: C
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When you comb your hair and electrons are rubbed onto the comb, your hair becomes
A. positively charged. B. ionized. C. negatively charged. D. none of the above
Why is 2,4,5-trifluorophenol much more acidic than phenol?
A. The fluorines destabilize the benzene ring and thus give the structure more acidic characteristics. B. False! 2,4,5-trifluorophenol is actually not more acidic than phenol. C. The fluorines have high electronegativities and help to stabilize the negative charges, which makes it even easier for the hydrogen to be lost. D. The fluorines adjacent to the OH group are large and shield the hydroxyl group from making the solution basic.
Compare and contrast fossil pollen, tree-growth rings, and corals as three proxies for determining paleoclimate
What will be an ideal response?
The location of the Prime Meridian is an arbitrary choice.
Answer the following statement true (T) or false (F)