What is the projected population of Earth in 2050?

A. 95 billion
B. 95 million
C. 9.5 billion
D. 950 billion


Answer: C

Environmental & Atmospheric Sciences

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Which animal has been removed from the U.S. endangered species list?

A. manatees B. American crocodile C. pythons D. California condor E. bald eagles

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Distribution of temperature during the year:

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Which of the following is a pull factor that is causing people to leave their farms for urban life?

A) low crop prices B) opportunities for college education C) difficult and sometimes dangerous work D) expansion of housing subdivisions onto farmlands E) high cost of machinery

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Of the rocks listed below, the most widely distributed type of metamorphic rock is ________

A) schist B) granite C) opal D) sandstone E) quartz

Environmental & Atmospheric Sciences