In Rodinia, a well-documented Precambrian supercontinent, ________
A) North America and South America made up one continuous fragment
B) North America was located near the center of the supercontinent
C) the Rocky Mountains were located to the south of the North American craton
D) North America was the last collision in the formation of the supercontinent
E) there is no evidence of North America
B
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The most abundant rock type deposited during the Kaskaskia sequence was ____
a. the Oriskany Sandstone b. carbonates c. coal d. igneous e. arkose
European explorers traveled from island to island decimating islanders and disrupting their cultures
Indicate whether the statement is true or false
An increase in the number of polar bears seen visiting human settlements indicates that
a. Polar bear populations are not actually declining. b. More limited hunting is driving the bears to seek food in human settlements more frequently. c. Polar bear populations are on the increase. d. Human food is more appealing to polar bears than wild seals. e. Polar bear populations are on the increase and human food is more appealing to polar bears than wild seals.
Methane is one of the "greenhouse gases." ________ is (are) a primary source of release of methane into the atmosphere.