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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.

Which of the following statements is most likely a characteristic of an authoritarian government in africa

Approximately how close is russia to alaska ? a.5 miles b.50 miles c.500 miles d.5000 miles