An estuary is a. a freshwater biome b. an area with a low concentration of minerals and nutrients c. characterized by deep water d. an ecotone

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.