yes when they r mixed together they form a plasma
They contain saltwater and freshwater
Where a freshwater river drains into an ocean, the fresh water may mix with the salt water ... this is called brackish water.
Gulfs can contain either freshwater or saltwater, but most are primarily saltwater bodies connected to oceans. For example, the Gulf of Mexico is a saltwater body, while some smaller coastal areas or estuaries may have a mix of saltwater and freshwater. Freshwater influx from rivers and streams can create brackish conditions in certain parts of a gulf, but the overall classification usually leans towards saltwater.
There is much more saltwater than freshwater. All of the oceans are made up of saltwater for example.
No seas are saltwater like oceans
oceans have salt water, no fresh water.
There are no freshwater oceans. Only where large rivers empty into the sea, there are some areas of lower salinity, but no freshwater oceans.
Most lakes contain freshwater. From this fact, I'm assuming it is made out of freshwater, rather than saltwater.
oceans,rivers.
They contain elements of both freshwater and saltwater ecosystems.
Oceans and seas are comprised of saltwater, and rivers are comprised of freshwater(drinkable, or potable)
Salmon primarily live in saltwater environments, such as oceans and seas, but they migrate to freshwater rivers and streams to spawn.