Because of atmospheric refraction, a star seen near Earth's horizon is actually ____
a. slightly higher than it appears
b. slightly lower than it appears
c. slightly brighter than it appears
d. much further away than it appears
e. much dimmer than it appears
ANSWER: b
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In their attempt to secede from ________, only Russia (illegally) supports and recognizes the newly independent state of Crimea
A) Georgia B) Moldova C) Ukraine D) Kaliningrad E) Serbia
Diasporas
A) occur when people of a homogeneous group are dispersed from their traditional home region. B) occurred frequently during biblical times, but have been rare since. C) have been the most common reason for conversion to Christianity. D) refer solely to the emigration of people from the region of Palestine.
The number of males per 100 females in the population is called
A) dependency ratio. B) maternal mortality rate. C) sex ratio. D) male fertility rate. E) the golden ratio.
How much of Earth's primary productivity is used or preempted by humans?
What will be an ideal response?