Fill in the Blanks NatureOnline version Elements of nature by Laura Daniela Valencia 1 sea volcano stones salt lake water water river ocean beach sand palms grass A is a natural stream of that flows continuously through a bed of land where , apart from water , there are many , sand and some aquatic animals . On its banks grows or some plants and it flows into the sea , a or another river . The is considered as the whole of the seas and oceans , also called the world or simply the ocean , it is the body of that covers more than 70% of the Earth's surface . It has its shores , which are made of of different colors , some whiter and others even colored . This is the ideal place to grow that give shade to people who are going to enjoy the , the breeze and the sea . In some areas this water is hot and creates the thermal baths . This is because there is a nearby .