Answer:

Estuaries are bodies of water and their surrounding coastal habitats typically found where rivers meet the sea.

Biotic components are the ones which include all living beings in a habitat where as various non-living things of the habitat constitute abiotic components. Examples of Biotic components- plants, microorganisms, animals etc. Examples of Abiotic components- rocks, water bodies, mountains, air etc.

Intertidal Zone Biotic Factors: Human Impact, Density of Algae/Kelp, Population of: Plants, Mollusks, Crustaceans, Worms, Fish, and Mammals. Intertidal Zone Abiotic Factors: Water Depth, Temperature, Turbulence, Salinity, Ph Balance, Tides, Winds, and Sediment.