In the late medieval period, various technologies like the heavy plow and waterwheels were introduced in Europe. Where did these innovations come from?
A) Arabs, Indians, and Chinese
B) Carpathian Mountains
C) Florence, Rome, and Venice
D) Jews
E) North Africans
A
Environmental & Atmospheric Sciences
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After three half-lives, one-ninth of an original radioactive parent isotope remains, and eight-ninths has decayed into the daughter isotope.
a. true b. false
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Scattering occurs more in water than air due to the greater density of water
Indicate whether the statement is true or false
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What are the two primary factors that control biologic productivity in the surface oceans?
a) Sunlight and temperature b) Temperature and sunlight c) Temperature and nutrients d) Sunlight and nutrients e) Sunlight and oxygen
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GIS analysis would not be possible without
A) computers. B) satellites. C) cell phones. D) government agencies.
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