Explain how differences in the physical conditions in marine environments contribute to the differences in the global distribution of no-mineral resources (such as fish and shellfish). Help Now ! Will give brainliest

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.