Biological sediments are the most abundant sediments due to the high productivity of organisms along
the continental shelf. Indicate whether the statement is true or false.
ANS: F
Terrigenous sediments are the most abundant type. Biogenous sediments are common as well and are
more abundant in areas with high productivity. Information can be found in the section Sediments May
be Classified by Source.
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Elongate sand bodies paralleling a shoreline but separated from the shoreline by a lagoon are
a. barrier islands. d. carbonate shelves. b. point bars. e. deltas. c. turbidites.
Forecast accuracy is broken down into the three categories: Short-range, medium-range, and climatic-range
Indicate whether the statement is true or false
Which scenario led to the disaster that destroyed the city of Armero in 1985?
A) Heavy rains saturated the slopes of Nevado del Ruiz. B) Flooding eroded the slope of Nevado del Ruiz, oversteepening it. C) An earthquake shook the slope materials of Nevado del Ruiz loose, causing a landslide. D) Heat from the eruption of Nevado del Ruiz melted the volcano's ice cap.
When warm and cold air masses collide, the warm air is forced upward. Why does this occur?
What will be the ideal response??