Answer:
B. Marine organisms.
Explanation:
The four factors that influence ocean currents are winds, water density (the amount of salt in water and its temperature), the ocean bottom topography and the rotation of the Earth (it creates two currents, one clockwise in the Northern Hemisphere and one counter-clockwise in the Southern Hemisphere). Marine organisms, plants or animals, are not counted as a factor that affects currents.
It has opened new trade routes and we can see what they used for their roads and we can make ours better.
A physical feature is the mountains, deserts, and lakes. It affects where people live because of the climate, food, and water available. For example, if you live in the mountains, than you must have more snow than someone who lives in the desert. People may not want to live there because of the cold, that is why many people do not live in the mountains.
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