Polar bears are ________.
A. hunted by native peoples
B. managed by international agreement
C. top predators of Arctic marine food chains
D. protected by the U.S. Marine Mammal Act
E. All of these are correct.
Answer: E
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High and low tides are caused by
A) the tendency for water on a spinning globe to be thrown outward. B) daily heating and cooling of the seas, which causes seawater to contract and expand. C) a rise in sea level during the day because of an increase in storms. D) water being pulled by the gravity of the Moon. E) All of these are correct.
The strongest winds in a hurricane are found:a
at the center of the storm. b. in the eye wall. c. in the rain bands. d. at upper levels, above the center of the hurricane. e. near the periphery of the hurricane.
Research performed by Edward O. Wilson on ____ has been applied to the study and understanding of other social organisms, including humans.
A. ants B. worms C. bees D. chimpanzees E. elephants
The rainfall of the tropical savanna climate is most likely to be ____
a. concentrated in the low sun period b. less reliable than that of the tropical wet climates c. over 100 inches (40 cm) a year d. largely orographic in origin