The correct answer is - d. colder and denser.
The main differences between the surface currents and deeper currents are the temperature and density, and that actually decides their position in the water, on the surface, or deeper.
The surface currents are warmer, and because they are warmer the molecules are much more loose, so the density is lower, which in return makes it easier, thus it is in the surface.
The deeper currents are colder, and because they are colder the molecules are much closer and more concentrated, so the density is higher, which means that they are heavier, thus fall deeper below the easier currents.
Physical features are things like the environment, land-forms, and coasts.
Human features are thing like government, language, and culture.
<span>Coastal plains are found in northwest Belgium - P
In Belgium, tension exists between the Flemish people, who speak Dutch and the Walloons, who speak French. - H
Paraguay is a landlocked country. - P
The Pacific Ocean forms Chile's western border. - P
The Association of Southeast Asian Nations (ASEAN) consists of ten nations. Farming is the main economic activity in Paraguay. - H
Canada's government is a constitutional monarchy - H</span>
The frequency and speed of the wind
The energy of the waves hitting the shore
The hardness of the rock that makes up the shoreline
All of these will determine the shape and how fast a cliff is formed, such as the speed of the wind and water, as well as how hard a rock is, will shape how the rock looks like.
For example, if the wind and waves are traveling extremely quickly, and the rock is made of sand, the rock will break much quickly.
Hope this helps
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