A mineral specimen with a Mohs hardness of 5 can scratch a mineral specimen with a hardness of 3.
Answer the following statement true (T) or false (F)
True
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The vast majority of American adults support the geologic interpretation of the evolution of the Grand Canyon.
Answer the following statement true (T) or false (F)
Petroleum and oil reserves are often found in sedimentary rocks because
A) these rocks are very porous and permeable. B) chemical changes occur to create these reserves. C) these rocks can contain fossilized organic matter. D) oil accumulates in the sediments.
The subsolar point
A) never moves more than 23.5 degrees in a year. B) is at the Tropic of Cancer on the June solstice. C) reaches above the Arctic Circle only in summer. D) is independent of the solar declination.
The main component of photochemical smog is ____
A) ozone B) carbon monoxide C) sulfur dioxide D) chlorofluorocarbons