What is the feature numbered 1 in the upper part of this figure?

A. lateral moraine
B. U-shaped valley
C. terminal moraine
D. cirque


Answer: D

Environmental & Atmospheric Sciences

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How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram?

A. An age on the dike would not help us because it is an igneous rock. B. The upper unit would be older than an age determined on pebbles of the dike in that unit. C. The dike is younger than the lower unit but older than the upper unit. D. The lower unit would be younger than an age on the crosscutting dike.

Environmental & Atmospheric Sciences

Ecosystems are connected by ________

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Atmospheric pollution is the worst when

A. coal is burned. B. uranium undergoes fission in a nuclear reactor. C. natural gas is burned. D. geothermal heat is used to generate electricity.

Environmental & Atmospheric Sciences