What agricultural system is sometimes referred to as "slash and burn"?
A) swidden
B) plantation agriculture
C) intensive subsistence
D) rice cultivation
E) commercial agriculture
A) swidden
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In order to control flooding, levees are frequently constructed along the banks of rivers to confine flow to the channel. Given this, what happens to the flow velocity and erosive power of the stream during a flood, before the water overflows the levee?
a. Velocity increases because the width does not increase, and the erosive power increases. b. Velocity increases because depth does not increase, and the erosive power increases. c. Velocity decreases because the depth of the channel is significantly greater, and the erosive power increases. d. Velocity decreases because the width of the channel is significantly less and the erosive power decreases.
CO2 reacts with water to form _______________, which makes the ocean more acidic
Fill in the blank with correct word.
This country is the only country considered 100% urban in the Latin American region and in fact, one of the few countries around the world to hold this distinction
a. Anguilla b. Aruba c. St. Lucia d. Turks and Caicos Islands
Which one of the following is not an advantage of solar energy?
A. It is essentially pollution-free. B. It is available at no cost. C. It is an inexhaustible resource. D. It is a widely dispersed resource.