The cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of the continents, is known as a ________.
A. Wegener plan
B. delamination plan
C. Wilson Cycle
D. Vine-Matthews system
E. Hess Process
Answer: C
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Egg pulling involves
A. a technique used to extend the breeding span of captured birds. B. the collection of eggs from the wild. C. the use of fertility drugs to increase productivity. D. the production of hybrids in captive breeding programs. E. in vitro fertilization.
Scientists overwhelmingly agree that Earth's climate is undergoing an abrupt increase in temperature.
Answer the following statement true (T) or false (F)
The Colorado River's water resource allocation is being complicated by ________
A) saltwater intrusion into the Colorado estuary near San Diego B) sinkhole collapses in Arizona and southern California C) rapid growth of vegetable farms in southern Arizona D) the rapid growth of Las Vegas E) large numbers of people moving out of Nevada
Given that the reaction N2(g) + 2 O2(g) ? 2 NO2(g) is endothermic, which of the following is true of the reaction 2 NO2(g) ? 2 N2(g) + 2 O2(g)?
A) Its activation energy is lower than that of N2(g) + 2 O2(g) ? 2 NO2(g). B) Its activation energy is the same as that of N2(g) + 2 O2(g) ? 2 NO2(g). C) Its activation energy is higher than that of N2(g) + 2 O2(g) ? 2 NO2(g). D) There is no relationship between its activation energy and that of N2(g) + 2 O2(g) ? 2 NO2(g).