The cause of the earth's most recent mass-extinction event is:
A. an impact by an asteroid, meteorite, or comet
B. a global cooling, or ice age
C. the extinction of the dinosaurs
D. human activity
D. human activity
You might also like to view...
Once they were introduced and perfected in the 1950s, generative grammars ceased to evolve
Indicate whether the statement is true or false
_________ is the best example of a mass fatality incident
a. A drive-by shooting in New York City b. Ten unsolved murders in a town of 10,000 people c. Five people killed during a church fire in a small farm town with no police d. A family killed by carbon monoxide poisoning in any sized town
The earliest appearance of genus Homo in East Africa may date prior to
a. 1 mya. b. 1.8 mya. c. 2 mya. d. 3 mya. e. 2.5 mya.
In industrialized nations, the age of menarche will be __________ than in non-industrialized nations
a. the same b. slightly older c. younger d. much older