Foliation indicates that ____ during metamorphism
A)a liquid intrusion flattened crystal patterns
B)magnetic influences were present
C)the rock was subjected to heat and differential pressure
D)the rock was formed deeper in Earth than its nonfoliated counterpart
E)carbon dioxide invaded pore spaces
C
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The American alligator was almost hunted to extinction, but was protected starting in the late 1960s and has made a remarkable recovery. Which best describes the change in overall biodiversity that occurred from 1960 to 2000 in ecosystems due to changes in alligator population? Confine your analysis to ecosystems where alligators are native and ignore the contribution due to changes in the alligator population.
A. increased B. decreased C. stayed the same D. impossible to determine
Which of the following is a consequence of clearing forests for agriculture purposes?
A) Soil erosion is increased. B) Crop productivity is greatly increased because of the rich soil. C) CO2 levels remain appropriate within the atmosphere. D) Biodiversity is increased. E) Water runoff is decreased.
Over ________% of the fuel you pump into your automobile does something other than move your vehicle down the road
A) 55 B) 65 C) 85 D) 25 E) 45
Rock falls
A. cause the "nick point" in a stream to migrate downstream with time. B. occur only on mountain sides in dry climates. C. are unaffected by waves slamming against the base of a sea cliff. D. occur on any steep-faced cliff, including under waterfalls.