AP BIOLOGY

Detailed explanation-1: -Estuaries are areas where freshwater streams or rivers merge with the ocean. This mixing of waters with such different salt concentrations creates a very interesting and unique ecosystem. Microflora like algae, and macroflora, such as seaweeds, marsh grasses, and mangrove trees (only in the tropics), can be found here.

Detailed explanation-2: -Aquatic biomes in the ocean are called marine biomes. Organisms that live in marine biomes must be adapted to the salt in the water. For example, many have organs for excreting excess salt. Marine biomes include the oceans, coral reefs, and estuaries (Figure below).

Detailed explanation-3: -Estuary biomes are normally located along coasts, where freshwater rivers meet saltwater oceans. Each day as the tide rises, salt water flows into the estuary. Likewise, freshwater flows down the rivers and creeks and mixes with the saltwater.

Detailed explanation-4: -Oceans make up the most widespread and well-known type of marine biome. There are five on Earth: the Atlantic, Pacific, Indian, Arctic, and Southern (Antarctic).

Detailed explanation-5: -Major marine biomes are neritic, oceanic, and benthic biomes. Other marine biomes include intertidal zones, estuaries, and coral reefs.