How thick is the atmosphere?
A. About 5000 km
B. About 500 km
C. About 50 km
Answer: B
Environmental & Atmospheric Sciences
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Photochemical smog generally requires the presence of
a. nitrogen oxides b. Sunlight c. volatile organic compounds d. Heat e. all of these answers
Environmental & Atmospheric Sciences
Although loess forms in only a few environments, it covers approximately ____________________%
of Earth's land surface. Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
A glacial landform that forms at the head of glacial valleys or troughs is called a(n) ____
A)roche moutonée B)esker C)kame D)arête E)cirque
Environmental & Atmospheric Sciences
Dead Man's Fingers is a kind of which of the following types of algae?
A) Brown algae B) Green algae C) Purple algae D) Red algae E) Yellow algae
Environmental & Atmospheric Sciences