During the 19th century, as populations grew and urban environments expanded, humans had less exposure to ________

A) air pollutants
B) natural environments
C) animals
D) water
E) chemicals


B

Environmental & Atmospheric Sciences

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Assuming that all other factors are equal, on a cold winter afternoon the amount of dissolved O2 in a lake will be

A) more than on a hot day because the decreased energy in colder water makes O2 molecules less likely to escape to the atmosphere, and biological oxygen demand will be higher than on a hot day. B) less than on a hot day because the decreased energy in colder water makes O2 molecules more likely to escape to the atmosphere, and biological oxygen demand will be higher than on a hot day. C) more than on a hot day because the decreased energy in colder water makes O2 molecules less likely to escape to the atmosphere, and biological oxygen demand will be lower than on a hot day. D) less than on a hot day because the decreased energy in colder water makes O2 molecules more likely to escape to the atmosphere, and biological oxygen demand will be lower than on a hot day.

Environmental & Atmospheric Sciences

Everything about a formal region is the same throughout the region

Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

Annual plant growth cycles can be observed in global CO2 data.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

During much of the year, ____ climates are characterized by low clouds, fog, and drizzle

a. marine b. tropical wet c. tropical wet-and-dry d. Mediterranean e. highland

Environmental & Atmospheric Sciences