How does deforestation by fire or human activity contribute to mass wasting?
a. It allows the wind to blow across the slopes, imparting a stress that triggers landslides.
b. It allows farming activity that exposes soil to erosion and mass wasting.
c. It kills tree roots that help hold the slopes in place, allowing mass movement.
d. It allows excess rainfall runoff to erode the landscape, triggering mass wasting.
c. It kills tree roots that help hold the slopes in place, allowing mass movement.
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Hang from a pair of gym rings and the upward support forces of the rings will always
A) each be half your weight. B) each be equal to your weight. C) add up to equal your weight.
The current drought in the American Southwest is
A) typical of the region's history since the 1700s. B) hardest on urban areas, since the region has little agriculture. C) one of the most severe in the last 1,000 years. D) less severe because there is surplus sustainable water available from deep wells.
What minerals are most abundant in detrital sedimentary rocks? In which rocks do these sediments predominate?
What will be an ideal response?
Based on the seafloor features labeled on this map, what kind of tectonic boundary would you say surrounds the Pacific Ocean basin?
A) Convergent B) Divergent C) Transform