is it A. urbanization / population
Imspiderman
A map is a representation of the Earth's surface. It is also a portable document describing an area. A map can also provide data such as migration trends, directions, and rock composition. There are many types of maps: The physical map shows land and water formations: mountains, oceans, rivers, the climate type shows the type of weather conditions occurring in the world, the political map shows how the earth's surface is divided into borders: continents, countries, and states... The science of making maps is referred to as cartography.
I am pretty sure that the answer is wind
Explanation:
stream shows salt water source
The marine biome is includes five main oceans: the Pacific, Atlantic, Indian, Arctic, and Southern, as well as many smaller Gulfs and Bays. Marine regions are usually very salty! ... The ocean is divided up into three vertical zones.