What caused the Nevadan, Sevier, and Laramide orogenies?
a. a change from a high subduction angle to a low subduction angle
b. continental-continental collision
c. a change from a low subduction angle to a high subduction angle
d. glacial rebound
e. emplacement of granitic batholiths
a
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How would you classify the following material? milk
A) a suspension
B) a heterogeneous mixture
C) a solution
D) an element
E) a compound
The recent alternative explanation for the disappearance of Earth's early atmosphere sees this as the primary causative agent:
A) volcanic outgassing. B) collisions of Earth with other large bodies. C) periodic energy pulses from the surface of the Sun. D) gravitational attraction of the Moon.
The specific heat of copper is 0.092 cal/g·°C. How much energy is required to heat 40.0 grams of copper from 25.0°C to 75.0°C?
A) 92 cal B) 180 cal C) 2.0 x 10^2 cal D) 280 cal
Earth's climate, during the entire span of human civilization, has
A. been relatively very stable. B. varied widely. C. been warmer than during most of Earth's history. D. been impossible to accurately measure.