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Geography, 23.10.2020 14:00 kiingbr335yoqzaxs
Why is cholera still a problem for many countries, even though people learned much about the disease and how it spreads during the London epidemic of 1846?
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In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .
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Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks
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Why is cholera still a problem for many countries, even though people learned much about the disease...
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