if fossils of a water animal or plant are found in a place then that place used to be covered by water in the past
aquarium has water find_underwater is aquatic_plant. fossil is remains. find_underwater is sand. find_underwater is water_plants. find_underwater is not aquatic_plants. find_underwater is not aquatic_plant. find_underwater is aquatic_plants. find_underwater is not habitat. find_underwater is not water_plants.