Feedlots are a major cause of ________ in water.

A. Phosphates
B. Nitrates
C. Coliform bacteria
D. Viruses
E. All of these are correct


Answer: E

Environmental & Atmospheric Sciences

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The first cities appeared in

A) China. B) Egypt. C) the Indus Valley. D) Turkey and Iraq.

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What would have happened to the earth if it were 10% closer to the sun?

A) Our sun would have burned out after a few hundred million years so life would not evolve. B) Our atmosphere would consist mainly of carbon dioxide. C) Liquid water and the water cycle would not exist. D) Our atmosphere would consist mainly of nitrogen.

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Which one of the following is a general characteristic of plants that are early colonizers during primary succession?

a. plants have wind-dispersed seeds b. plants are able to fix their own nitrogen c. plants can outcompete other plants that invade the area d. plants are shade-tolerant

Environmental & Atmospheric Sciences

_______ as a population less than ten percent of its previous levels

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences