What condition does NOT contribute to more fire-prone forests?
a. vegetation with large surface area per unit of volume
b. low-moisture-content fuels
c. low-humidity air
d. larger trees
e. insect-killed trees
ANSWER: d
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Answer the following statement true (T) or false (F)
Which soil horizon contains humus?
a. A b. B c. C d. D e. O
Where will you find a riparian zone?
A) In an area that has been heavily eroded because of the removal of vegetation B) Along a waterway C) Between topsoil and the water table D) In an aquifer
Which of the following is true regarding Earth's axis?
A) The axis remains parallel to the plane of the ecliptic. B) The amount of axial tilt fluctuates during the year and forms the basis for seasonal changes. C) All locations on earth receive sunlight at a 90° angle at least once a year due to the tilt. D) The axis is tilted 23.5° from a perpendicular to the plane of the ecliptic. E) Axial tilt is unrelated to the phenomenon of seasonal change.