It's called a sound
Actually they're either neither or both ; wetlands lie in the interface between fresh and salt water.
Coastal wetlands are those wetlands that are within, along, or near tidally-influenced water bodies. Their source of water (hydrology) may be salt, fresh, or both (brackish). Freshwater wetlands are those wetlands whose water source (hydrology) is of fresh water (not salty or brackish) . They can be tidally influenced by freshwater tides (tidal waterways above the salt line) or may be far inland (hydrology source is usually groundwater, surface waters, or precipitation).
Coastal wetlands are those wetlands that are within, along, or near tidally-influenced water bodies. Their source of water (hydrology) may be salt, fresh, or both (brackish). Freshwater wetlands are those wetlands whose water source (hydrology) is of fresh water (not salty or brackish) . They can be tidally influenced by freshwater tides (tidal waterways above the salt line) or may be far inland (hydrology source is usually groundwater, surface waters, or precipitation).
Wetlands can refer to both freshwater and saltwater areas. Wetlands are simply an area of land where the soil is saturated with water, either fresh or salt. For example, freshwater marshes exist inland, whereas salt marshes generally occur along the coast.
That depends on where the wetlands are located. If they are coastal wetlands, which are accessible to the sea, they will have a marine or estuarine enviroment. If they are further inland, where they are inaccessible to the sea, they will have a fresh water environment.
The Long Island Sound contains both fresh and salt water because it is an estuary.
Neither 'contain' air but both can be aerated.
They both have water, you idiot.
Diatoms are among the most common microbial eukaryotes and dominate in many different aquatic and marine habitats
Sorry for this short answer... Earth. A briny water ecosystem can contain both salt and fresh water, though it is all mixed together. These ecosystems are where a fresh water source, such as a river, meets a salt water source, such as an ocean. River deltas commonly have briny water.
Both fresh water and salt water environments have currents that flow through them, and both can support a wide variety of aquatic life.
Yes they do because the correct definition of estuary is a body of water that contains both salt water and freshwater