_____ are the relatively stable and immobile parts of continents and form the foundation on which Phanerozoic sediments were deposited

A)Shields
B)Platforms
C)Cratons
D)Epeiric seas
E)Orogenies


C

Environmental & Atmospheric Sciences

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In the concentric zone model of cities, the zone of transition typically begins at the dynamic outer edge of a city's

A) central business district. B) factory area. C) warehouse district. D) residential neighborhoods. E) suburban neighborhoods

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Which of the following demonstrates the correct order of the phases involved in a lightning stroke?

A) step leaders, return stroke, separation of charges, flow of negative charge into ground, dart leader B) dart leader, charge separation, flow of negative charge into ground, step leaders, return stroke C) charge separation, dart leader, step leaders, flow of negative charge into ground, return stroke D) charge separation, step leaders, return stroke, flow of negative charge into ground, dart leader

Environmental & Atmospheric Sciences

On a worldwide basis, which of the following factors exerts the greatest influence over natural vegetation?

a. climate b. soil c. topography d. humans

Environmental & Atmospheric Sciences

Briefly discuss how the evolution of jawed fishes and other predatory creatures affected the marine ecosystem

Environmental & Atmospheric Sciences