Water circulating through rifts and ridges gets altered by coming into contact with the fresh crust, stripping the water of magnesium and other elements
Indicate whether the statement is true or false
True
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Fossil evidence of the links among Gondwana continents was compelling because the species shouldhave:a
been found over wide regions if they were able to migrate among continents. b. exhibited evidence of tolerance for climatic extremes. c. shown a mechanism for widespread dispersal. d. been found over wide regions and shown a mechanism for widespread dispersal. e. been found over wide regions, exhibited evidence of tolerance for climatic extremes and shown a mechanism for widespread dispersal.
Steel and chemical industries are major water polluters primarily because they
A) are major users of municipal sewage systems. B) release runoffs of pesticides. C) generate large amounts of wastewater. D) require small amounts of water in the manufacturing process. E) generate superheated steam.
Which of the following has the lowest water solubility?
A) butanal B) heptanal C) hexanal D) pentanal
The U.S. population is projected to increase to over ________ by mid-21st Century
A) 250 million B) 425 million C) 400 million D) 300 million E) 1 billion