Which statement best describes an ecological benefit of marshes? Depletes groundwater resources
Provides low ecological productivity
Reduces natural flood and erosion control
Filter and clean water before it enters the ocean

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.