________ are materials that are good indicators of the metamorphic environment in which they formed and can be used to distinguish between various zones of metamorphism
A) Index fossils
B) Index minerals
C) Blueschists
D) Aureoles
Answer: A
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Metamorphism is most common along ____________________ plate boundaries. Fill in the blank(s) with the appropriate word(s)
Tidal power does not ________
A) convert the kinetic energy of tides to electricity B) generate electricity when high tides revert to low tides. C) convert tides into the potential energy needed for electricity generation D) generate electricity using tidal turbines E) operate much like wind turbine electricity generation, except underwater
A keystone species is a species whose presence
A. Provides food for all other species in a community B. Influences the population size of many other species in its community C. Is always at the top of the trophic levels as a top predator D. Is the main reason a community exists E. Is an indicator of environmental health
When Joan pushes a crate across a level floor at constant velocity, friction between the crate and the floor is
A. the same amount as her pushing force. B. less than her pushing force. C. more than her pushing force. D. none of the above