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Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

What volcanoes form on a divergent plate margin