By some accounts, tourism is the world's largest industry, with international tourist receipts totaling ________ in 2010

A) 300 billion
B) 604 billion
C) 919 billion
D) 1.1 trillion
E) 2.1 trillion


Answer: C

Environmental & Atmospheric Sciences

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The area of high pressure and little surface wind, located at 30° latitude, is referred to as the ____

A) subtropical low B) intertropical convergence zone C) horse latitudes D) doldrums

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In developed countries, the most recent increases in agricultural productivity have come from ________

A) irrigation in arid areas B) clearing rainforests C) extensive drip irrigation use in farming D) clearing grasslands and savannas E) new crop varieties and polyculture techniques

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Contrast Soviet and post-Soviet migration patterns within the Russian domain, and discuss the changing forces at work

What will be an ideal response?

Environmental & Atmospheric Sciences

You have decided to install solar collectors on the roof of your home that will cut your use of propane gas to heat both your hot water tank and the living spaces in your home

In doing so, you are using a ______________resource rather than a ______________resource. a. renewable; nonrenewable b. perpetual; renewable c. renewable; perpetual d. nonrenewable; renewable e. perpetual; nonrenewable

Environmental & Atmospheric Sciences