When a squid pushes against water, the squid moves forward because
A) its tentacles apply a strong force to the water.
B) its muscles flex.
C) the water pushes against the squid.
D) it swims using principles of flotation.
C
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A coalesced apron of alluvial fans along the base of desert mountains is a(n) ____________________
Fill in the blank(s) with correct word
Which of the following is TRUE of the biosphere?
A) It is not connected to the overlapping inorganic spheres. B) It is never referred to as the ecosphere. C) It is static, never to rarely changing. D) It extends from the floor of the oceans to 8 km (5 mi.) into the atmosphere.
In the Southern Hemisphere and around a high-pressure region, the wind blows:
a. Clockwise and diverges outward. b. Counterclockwise and converges in-ward. c. Counterclockwise and diverges out-ward. d. Clockwise and converges inward.
A recent study indicated that more than 61% of human pathogens are zoonotic, meaning that they
A) can infect any animal species. B) originate in humans and spread to various species of animals. C) can be transmitted between animals and humans. D) are invariably fatal in animals but can cause serious illness in humans.