Hipparchus devised the magnitude system in the late 1700's
a. True
b. False
Indicate whether the statement is true or false
False
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Which of the following is true of natural selection?
A) It is a random occurrence. B) It does not occur in most species of organisms. C) It is directed by changes in the environment. D) It does not lead to evolution of a species.
The ____________________ is the point on the celestial sphere directly above an observer, regardless of where the observer is located on Earth
Fill in the blank(s) with correct word
Which of the following telescopes must be used above Earth's atmosphere?
a. an optical telescope b. the VLBI telescope c. an x-ray telescope d. a radio telescope e. none of the above
A car accelerates from to at a rate of How far does the car travel while accelerating?
A) 80.0 m B) 133 m C) 226 m D) 399 m