The first commercial crop of the British North American colonies was

A. cotton
B. wheat
C. tea
D. tobacco


D. tobacco

Environmental & Atmospheric Sciences

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Which feature on this diagram is a cirque?



A) 1, the circular depression at the head of the valley
B) 2, a lake in the upper valley
C) 3, a steep ridge
D) 4, a valley that is above the level of the main valley

Environmental & Atmospheric Sciences

GIS refers to

A) Landsat. B) surveying. C) a computer system that stores, organizes and analyzes geographic data. D) an agency of the United Nations.

Environmental & Atmospheric Sciences

Which of the following is true?

A) No amines form hydrogen bonds. B) The N-H- - - -N hydrogen bond is stronger than the O-H- - - -O hydrogen bond. C) The N-H- - - -N hydrogen bond is the same strength as the O-H- - - -O hydrogen bond. D) The N-H- - - -N hydrogen bond is weaker than the O-H- - - -O hydrogen bond.

Environmental & Atmospheric Sciences

Two layers of limestone are found 200 kilometers apart. Give two lines of evidence that could show the layers are

correlated. What will be an ideal response?

Environmental & Atmospheric Sciences