As a stream changes from its headwaters to its mouth, which of the following is not likely to occur?
A) The channel gets smoother.
B) The volume of water increases.
C) The channel gets wider downstream.
D) Sediment size gets smaller downstream.
E) Flow velocity decreases.
E
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Plants that are allelopathic
A) have very sharp spines instead of leaves. B) cannot tolerate long periods of drought. C) produce flowers very rapidly after a rain event. D) are likely to be located away from other plants.
Generally, along the polar front one would not expect to observe:a
temperatures on one side lower than on the other side. b. an elongated region of lower pressure. c. clouds and precipitation. d. converging surface air. e. sinking air aloft.
A pharmaceutical company runs an advertisement on TV, providing data that describe the way in which their own customer preference survey places their product ahead of their competitors' products. This claim is most likely
A) peer-reviewed sound science. B) junk science. C) somewhat biased but accurate science. D) raw data that need to be submitted to a scientific journal for evaluation.
Which statement is true about the composition of minerals?
A) Minerals are composed of elements. B) All minerals are compounds. C) There are no minerals composed of only one element. D) The chemical composition of a mineral does not determine the physical properties of the mineral.