Plants introduced into new habitats in which they were not originally raised are ________

A) feral
B) taiga
C) exotic
D) anadromous
E) selva


Answer: C

Environmental & Atmospheric Sciences

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Subsidence in the Gulf coast is mainly due to ____

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What theory explains the formation of a differentiated Earth consisting of layers?

A)Darwin's theory B)plate tectonic theory C)Einstein's Theory of Relativity D)homogeneous accretion theory E)Big Bang

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Annual row crops such as ________ cause the highest erosion rates because ________. 

A. Wheat and coffee; they need so much water B. Beans and coffee; trees are usually cut down for the fields C. Tea and beans; plowing in the fall is required for planting of these annual spring crops D. Corn and coffee; they use so many nutrients E. Corn and beans; soil is left bare for the majority of the year

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Which of the following has NOT been a result of the introduction of the Wello WaterWheel in rural India?

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Environmental & Atmospheric Sciences