Tropical rainforests only make up about __________ percent of the earth's surface but contain up to _____________ percent of the earth's biodiversity.
-5; 50
-2; 50
-4; 40
-2; 20
3; 30
-5; 50
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On mainland Southeast Asia, what is the most common crop in the lowlands?
A) sugarcane B) rice C) rubber D) coconuts E) opium poppies
Volcanic island arcs are characteristic of which type of convergent plate boundaries?
a. continental-continental b. continental-oceanic c. oceanic-oceanic d. continental-oceanic AND oceanic-oceanic e. continental-continental; continental-oceanic AND oceanic-oceanic
What factors are the most critical in determining whether a fossil is preserved?
A. The temperature of the granite and how fast it cooled. B. Whether the creature was a predator or was prey. C. The color of the original organism compared to the color of the sediments in which it is found. D. The age of the fossil and the age of sediments in which it is preserved. E. Whether the creature had hard parts and how fast it was buried.
________ is(are) the smallest-sized pieces created by frost wedging
A) Large boulders B) Sand C) Dust D) Silt E) Small rocks (e.g. 5 cm (2 inches) across)