Most of the organisms that have ever existed are now extinct
a. True
b. False
True
Environmental & Atmospheric Sciences
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Superefficient and ultralight cars
a. may eventually get up to 300 mpg b. are not yet close to reality c. have been developed in Europe, but not the United States d. could get up to 50 miles per gallon in the future e. are fuel efficient, but not safe for human transport
Environmental & Atmospheric Sciences
In a communist political economy, natural resources and productive enterprises are owned by
A) individuals. B) corporations. C) the government. D) foreigners.
Environmental & Atmospheric Sciences
The Earth's magnetic field has reversed itself many times in the geologic past. Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
An ash fall occurs when volcanic ash is ejected into the atmosphere and settles to the surface. Indicate whether the statement is true or false
Environmental & Atmospheric Sciences