Rock deep within the Earth is ________ and ________.
A. cool; heat flows in toward Earth's center
B. unknown; we can only guess about conditions there
C. hot; heat flows inward toward Earth's center.
D. the same temperature throughout the earth; heat flow is not an important consideration
E. hot; heat flows out toward Earth's surface
Answer: E
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How has the geological process of plate tectonics influenced the process of evolution over geologic time?
a. The changing location of the plates across the Earth's surface exposes organisms to differing concentrations of mutagens, thus increasing or decreasing the rate of evolution. b. The rate of evolutionary change is directly proportional to the speed with which the Earth's tectonic plates are moving. c. The changing location of the plates across the Earth's surface results in changing climatic environmental conditions for various communities and populations of organisms. This has driven evolutionary change. d. The movement of the Earth's geologic plates is the source of energy that ultimately drives the process of evolution. e. The movement of the Earth's geologic plates further away from the equator resulted in an increase in the gravitational forces on the planet. This allowed for the initial accumulation of the gases that form the Earth's atmosphere.
Surface processes of weathering and erosion tear the land down. What builds it up?
A. actions of plate tectonics B. deposition C. both A and B D. none of the above
Atmospheric pressure can be measured in all of the following units EXCEPT
A. barometer units. B. millibars. C. inches of mercury. D. bars.
World food production has been increasing faster than population
Indicate whether the statement is true or false