What could be considered evidence for the theory that the formation of the grand canyon took millions of years? a) the earthquake that created the canyon took place about a million years ago. b) the grand canyon was wider at the base, than it is at present, a few years ago. c) the rocks that are part of the canyon walls originated millions of years apart. d) the colorado river has changed its course many times in the last million years.

The answer is C because how long the structure lasted and how far were they apart.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

what image you forgot to include it.