EVERYDAY SCIENCE

Detailed explanation-1: -5 Estuaries An area where fresh water from a river mixes with salt water from the ocean As two bodies of water meet, currents form and cause mineral-rich mud and other nutrients fall to the bottom.

Detailed explanation-2: -These develop in estuaries where rivers deposit their load of mineral-rich mud.

Detailed explanation-3: -Both the salt marsh and mangrove habitats provide homes for crabs, snails, fish, and birds. Some species of animals live only in one habitat or the other. Other animals frequent both habitats.

Detailed explanation-4: -The benthic zone is nutrient rich because of the sand, silt, and dead organisms that comprise the bottom of the region; as water depth increases, temperature within this deepwater region decreases.

Detailed explanation-5: -Examples of estuaries are river mouths, coastal bays, tidal marshes, lagoons and deltas.