The soil beneath the rainforests canopy is not excellent for agriculture because as heavy rain falls on the soil, the water works its way downward, removing nutrients in a process called ____.
a. decomposition
b. leaching
c. denitrification
d. saturation
e. evapotranspiration
Q. 2In which tropical climate does the high humidity and cloud cover prevent the maximum temperatures from reaching extremely high values?
a. tropical monsoon (Am)
b. dry-summer subtropical (Cs)
c. tropical wet and dry (Aw)
d. humid subtropical (Cfa)
e. tropical wet (Af)
Q. 3In the forest, little sunlight is able to penetrate to the ground through the thick crown cover. As a result, ____.
a. evapotranspiration does not occur near the forest floor
b. most plant growth is found near the forest floor
c. little plant growth is found near the forest floor
d. evaporation from soil does not occur near the forest floor
e. moisture cannot reach the plants on the forest floor
Q. 4Which climate type extends northward and southward from the equator to about latitude 15 to 25?
a. tropical moist climates (A climates)
b. dry climates (B climates)
c. moist mid-latitude climates with mild winters (C climates)
d. moist mid-latitude climates with severe winters (D climates)
e. polar climates (E climates)
Q. 5In 1955, Thornthwaite revised his classification system, to emphasize ____.
a. evaporation
b. potential energy
c. potential evapotranspiration
d. photosynthesis
e. precipitation
Q. 6Using the P/E index, the Thornthwaite system defines ____ major humidity provinces and their characteristic vegetation.
a. three
b. four
c. five
d. six
e. seven
Q. 7In Thornthwaite's P/E index, the P and E stand for ____.
a. precipitation and evaporation
b. precipitation and energy availability
c. potential sunlight and energy
d. potential sunlight and evaporation
e. photosynthesis and evaporation
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