What are the likely consequences if a 200 m asteroid struck the center of a 3 million person city?

A. near complete destruction
B. less than 10 percent of the city destroyed
C. about 50 percent of the city destroyed


Answer: A

Environmental & Atmospheric Sciences

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Discuss biologists’ definition of “species.” What does this definition imply? Give an example of a species and discuss

binomial species names. What will be an ideal response?

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Streamflow is fastest ____

A)at the bottom of the channel B)at the surface of the water C)along the sides of the channel D)at the center of the channel, just below the surface E)at the center of the channel, at the surface

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Which environmental impact would not be a result of placer mining?

A) contamination of underground aquifers. B) smothering aquatic life. C) clogging streams with silt. D) destroying streambed habitats. E) introducing toxic compounds to streams

Environmental & Atmospheric Sciences

The most common use of bioremediation has been to assist in the cleanup of ________

A) non-biodegradable chemicals B) herbicide and pesticide over-application C) PCBs D) oil spills E) heavy metal contamination sites

Environmental & Atmospheric Sciences