Planting rows of trees or shrubs around the periphery of a plowed field are long established farming practices that
A) serve as water reserves in times of drought.
B) attract insect pests away from the crops.
C) increase wind erosion and decrease soil moisture.
D) decrease wind erosion and increase soil moisture.
D
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Which region experiences the highest rates of infant mortality?
A) Africa B) Asia C) Europe D) South America E) North America
Who was killed in Hawaii during his last sea voyage after a skirmish with local people?
A) Prince Henry the Navigator B) Giovanni Caboto C) Ferdinand Magellan D) James Cook E) Vasco da Gama
Which of the following is a type of connective tissue?
A) skin B) bone C) smooth muscle D) spinal cord
The cities of Longview and Richland, in Washington, are unique because of what?
A) They are both centers for the nuclear energy industry. B) They were both preplanned cities. C) They were both towns owned by private corporations. D) They are both owned and run by Native American tribes, while remaining part of the United States.