Although Earth's oceans have existed since early in the formation of the planet, its ________ must have changed

A) chemical composition
B) physical state
C) color distribution
D) textural makeup


A

Environmental & Atmospheric Sciences

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Methane hydrates could provide a lot of energy for us to use. Outline the reasons that these resources

are not yet being used. What will be an ideal response?

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Although Portland, Oregon's population increased by 69% between 1980 and 2014, its urban area expanded by only 3%. This illustrates the use of ____.

A. urban growth boundaries B. regressive taxes C. strict zoning laws D. permitting restrictions E. mixed use neighborhoods

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About 900 million people live in extreme poverty, struggling to live on the equivalent of less than ____ a day.

A. $1.90 B. $5.00 C. $7.50 D. $10.00 E. $25.00

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The monuments of Angkor Wat bring in almost half a million foreign tourists a year into which nation?

A) Burma B) Cambodia C) Thailand D) Laos E) Vietnam

Environmental & Atmospheric Sciences