A ________ is a geographic low, which marks the location where oceanic lithosphere descends into the mantle

A) fold and thrust mountain
B) deep-ocean trench
C) seismic zone
D) mid-ocean rift


Answer: B

Environmental & Atmospheric Sciences

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Soil structure is usually determined by clumps called ________

A) colloids B) peds C) loam D) solum E) catenas

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At one time the earth's atmosphere contained no free oxygen

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Suburbanization has had a particularly negative effect on which of the following?

A) large corporations B) government C) housing values in the suburbs D) prime farmland E) all of the above

Environmental & Atmospheric Sciences

Which of the following is NOT a challenge facing Caribbean tourism?

A) capital leakage where most the profits rarely remain in the local economy B) a trend of Americans to either opt for domestic beach resorts and/or more exotic locales such as Costa Rica or the Persian Gulf C) the vulnerability of the industry to external market forces (such as a 9/11 style attack or a global recession) that would lead to a dramatic drop in international arrivals D) geopolitical instability throughout the Caribbean Basin which has proven to be detriment to tourism E) a trend towards cruise ship visits which limits tourist interaction ? both cultural and economic ? with the local islanders

Environmental & Atmospheric Sciences