On the geologic time scale, which division would encompass (cover) the 10 points longest amount of time?
eon
era
epoch
period

Why would the composition of a meteorite resemble the earth's interior?

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

All of the following are extrusive landforms except           a. batholiths.   b. lava plateaus.   c. shield volcanoes.   d. geysers.