Hydrogen and Oxygen
If you're picky, it's several. But the two main materials are water and salt.
The two main sources of salt are natural deposits in salt mines and sea water. Salt can be harvested from salt mines through mining and from sea water through the process of evaporation.
sea water is made of water and salt of course
The main predators of the Australian Sea Lion are the sharks. Specifically the White Pointers and the Great White Sharks are the two main animals that prey on Sea Lions.
A 'strait' is a narrow body of water connecting two larger areas of water or connecting two seas.
A stream of water flowing into a lake or sea is called an inlet or a tributary. This freshwater flow can help regulate the salinity levels in the lake or sea and can contribute to the overall ecosystem health by providing nutrients and oxygen.
The Black sea and the Aegean sea
Ancient Egypt, like modern Egypt) had several of bodies of waters. The main body of water within Egypt was, and still is, the Nile River. The northern coast of Egypt is on the Mediterranean Sea. The eastern coast is on the Red Sea.
The main predators of the Australian Sea Lion are the sharks. Specifically the White Pointers and the Great White Sharks are the two main animals that prey on Sea Lions.
H & O (Hydrogen and oxygen) Exept H & O sea water has Cl & Na ( Clor , Soudeum )
Two reptiles that live in water are the saltwater crocodile and the sea turtle. Both of these species are adapted to aquatic environments and can often be found swimming and hunting for food in the water.
The Mediterranean Sea and the Red Sea