Advances in telecommunications and transportation technologies lead to the perception of a shrinking world
Indicate whether this statement is true or false.
TRUE
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Zinc, Zn, is more easily oxidized than copper, Cu. What happens the moment after metal strips of these metals come into contact with each other?
A. The surface of the copper appears moist and cloudy as the zinc metal oxidizes and gets dissolved into Zn(aq) ions. B. The zinc metal begins to turn a greenish color indicating the presence of the formation of cupric oxide, CuO. C. The zinc metal immediately begins depositing electrons onto the surface of the copper, thus coating the copper with a white powder of zinc oxide, ZnO. D. Nothing happens. An immediate buildup of charge in either material prevents continued oxidation-reduction from occurring.
In the diagram below, D is the
A. benthic zone. B. mesopelagic zone. C. hadal zone. D. epipelagic zone.
Geologic records indicate that the earth has experienced perhaps ________mass extinction(s) where up to ______________percent of the species disappeared
a. 1, 50 b. 5, 95 c. 1, 95 d. 3, 75 e. 3, 50
The part of a city's economy that produces exports is called the nonbasic sector
Indicate whether the statement is true or false.