Because of human activities and growth, it is estimated that at least one species becomes extinct every day
In fact, biologist E. O. Wilson thinks that with the expansion of industrialism, mechanized agriculture, and deforestation as many as one-fourth of the world's plant families will become extinct by the end of this century. The loss of this __________ is a major concern for many individuals since we, as humans, are dependent upon these living organisms for our own survival (for food and medicinal applications).
A. biodiversity
B. green space
C. greenhouse
D. perestroika
Answer: A
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Which technique of making tools involves the preparation of a striking platform at one end of a specially prepared core, after which three or four long, triangular flakes are detached, leaving a nodule shaped like a tortoise shell?
a. Oldowan b. Acheulian c. Paleoindian d. Levalloisian e. Mousterian
The genetic evidence from Neandertal remains that is used in studying most Neandertal fossils is in the form of:
a. mtDNA. b. ?nuclear DNA. c. ?none of these. d. ribosomal information. e. ?all of these.
In 2008, people from which world region constituted most of the United States' foreign-born population?
a. Asia b. Middle East c. Africa d. Latin America and Caribbean
Why does health often suffer in cities?
A) The high population allows infectious diseases to flourish. B) There is less available medical care in cities. C) There is less food available for city dwellers. D) Urban populations aren’t in close enough contact with nature.