According to the Mineral Information Institute, the per capita (i.e., per person) consumption of crushed stone in the U.S. is 4.6 tons per year. What is the primary way that limestone rocks are consumed??
A. Crushed rocks are used in road construction.
B. Most people construct rock paths in their backyards.
C. Crushed rocks are used to build new houses.
D. Shoveling a few rocks out of your driveway every year adds up.
Answer: A
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Which of the following statements about peppered moths in England is FALSE?
A. In polluted areas, dark moths survived better than light moths. B. After pollution control laws were passed, dark moths became more common than light moths in urban areas. C. Bernard Kettlewell's experiments suggested that bird predation was responsible for evolution in peppered moth coloration. D. In the countryside, light moths survived better than dark moths.
The mantle is composed of
A) iron and nickel. B) iron-rich silicate rocks. C) half liquid and half rocky material. D) solid rock.
Which of the following is correct regarding continental drift?
A) It occurred about two billion years ago, but no longer occurs today. B) The term "continental drift" is now called plate tectonics. C) It does not occur because the crust is brittle. D) It is an old theory that has been essentially disproven.
What determines the ion exchange capacity of soil?
A. The amount of shrink-swell minerals B. The compressibility of the soil C. The permeability of the soil D. The amount of electrically-charged particles