What component of wave structure causes the wave crest to tumble forward onto the surface of shallow water or the beach?
A. swash
B. trough
C. wavelength
D. breaker
E. backwash
D
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Which of the following statements is true?
a. Temperature inversions occur when a layer of cold air prevents warm air from rising. b. Temperature inversions exacerbate pollution problems. c. Temperature inversions last only a few minutes to a few hours. d. Normally, cool air near Earth's surface expands and rises, carrying pollutants higher into the troposphere. e. Temperature inversions help prevent air pollution.
What does carbon dioxide break down into once it is in the ocean?
A) Carbonic acid B) Bicarbonate C) Carbonate D) All of these choices
Which of the following ecosystems might be considered as a bank of biodiversity?
A) Boreal forests B) Tropical forests C) Large lakes, such as the Great Lakes in North America D) Antarctica
Although per capita GNI is the lowest among modernizers, the Philippines still has a per capita GNI of $20,000 above highest per capita GNI of reformers
Indicate whether the statement is true or false