mid-ocean ridges, which contribute to the process of sea-floor spreading, form as a result of

earthquake activity that causes subduction

a rift valley, like the red sea, being filled

older ocean floor that moves toward the ridge

volcanic activity that produces magma

Find lake kissimmee in the middle of the state. into what river does the lake drain?

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.