Why do you think there are three criteria for Kepler’s for finding Earth-like planets? Why do you think NASA came up with these specific criteria?

Does the threat of global warming require international cooperation? why or why not?

The amazon river is in africa true or false

Most of the volcanic activity that occurs in the ring of fire is a result of the a. formation of mantle plumes away from plate boundaries. b. subduction of one plate under another. c. movement of two plates away from each other. d. sliding of one plate past another.