Answer:
B. and D
Explanation:
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Answer:
In fact, any relative motion between the two will cause a Doppler shift/ effect in the frequency observed. ... If stars and galaxies are travelling away from us, the apparent frequency of the light they emit decreases and their colour will move towards the red end of the spectrum.
Explanation:
False. While Canada does indeed have a slightly larger surface area than the United States, the population is much more sparsely distributed and therefore they have a much smaller population (Canada has roughly 35 million residents compared to the United States' approximate 319 million).
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Answer:
Níger, Somalia y Mali son los países que lideran el ranking