What is the Competitive Exclusion Principle of Ecology?
A. The theory that predators will feed on other species in the same environment
B. The theory that prey species must always outnumber the predator species
C. The theory that two species are unable to occupy the same ecological niche
D. The theory that mandates the presence of commensal species within a habitat
Answer: C. The theory that two species are unable to occupy the same ecological niche
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The ethnolinguistic region known as Kurdistan straddles the frontier of which three nations?
A) Iran, Iraq and Kuwait
B) Egypt, Jordan and Israel
C) Iraq, Syria and Jordan
D) Iran, Iraq and Turkey
E) Saudi Arabia, Yemen and Oman
Where in the cloud is Bergeron process going to be most vigorous?
A) A
B) B
C) C
An important cash crop in Vietnam that is grown in the highlands is
A. coffee B. marijuana C. cotton D. rice
Why do some communities inject treated wastewater into aquifers?
A) to recharge it artificially, since nature cannot keep up with urban demands B) as a convenient place to dispose of water that is not suitable for other uses C) for storage in a place that is not subject to as much evaporation as a reservoir D) to prevent flooding due to too much wastewater above the surface