Compaction of soil in a garden harms plants by ________

A) increasing aeration, increasing infiltration, and decreasing runoff
B) decreasing aeration, increasing infiltration, and decreasing runoff
C) decreasing aeration, decreasing infiltration, and increasing runoff
D) increasing aeration, decreasing infiltration, and increasing runoff


C

Environmental & Atmospheric Sciences

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The apparent westward "drift" of the planets compared to the background stars is called ________

A) retrograde motion B) occultation C) Ptolemaic motion D) precession

Environmental & Atmospheric Sciences

The boundary of a city is marked by a river. This is an example of which kind of boundary?

A. imposed B. natural C. antecedent D. geometric

Environmental & Atmospheric Sciences

In bombarding atomic nuclei with proton "bullets," the protons must be accelerated to high energies to make contact with the target nuclei

A. because the target nuclei are so small. B. because the target nuclei are positively charged. C. in order to penetrate through the electrons that surround each target nucleus. D. because the target nuclei are negatively charged.

Environmental & Atmospheric Sciences

Over the past 60 years, as people moved from U.S. cities to suburbs, the people that were left behind in the cities were primarily

A) older, poor people representing ethnic minorities. B) younger, wealthy people representing ethnic minorities. C) older and wealthy Caucasians. D) younger Caucasians.

Environmental & Atmospheric Sciences