Because little or no change occurred over a human lifetime, people previously thought that some geologic features were the result of a(n) .

What would be the distance of all the planets to the sun in astronomical units?

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity

What must happen for new french words to be published in official dictionaries? a. they must be approved by the french academy b. they must be voted on by the people of france c. they must be used by famous french writers d. they must be used by philosophers a. they must be approved by the french academy