sentences: moving fast in water has a positive impact on an aquatic animal's survival & webbed feet are used for moving faster through water by aquatic animals ->  webbed feet have a positive impact on an aquatic animal's survival  webbed feet have a positive impact on an aquatic animal's survival & an adaptation has a positive impact on an animal 's survival ->  webbed feet are a kind of adaptation for aquatic animals  a body of water is a kind of environment & living in an environment causes an organism to adapt to that environment ->  living in a body of water causes an organism to adapt to that body of water  living in a body of water causes an organism to adapt to that body of water & aquatic animals live in bodies of water ->  aquatic animals adapt to living in water  webbed feet are a kind of adaptation for aquatic animals & aquatic animals adapt to living in water -> webbed feet are a kind of adaptation for living in water