<span>The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities</span>
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Soil salinity is the salt content in the soil. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean.
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no longer used by species.
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The correct answer is letter B. Horizontal water movements. Upwelling is a phenomenon that involves the dense's motion because of the wind. It is cooler and makes the water rich in nutrients towards the ocean surface. The warmer air is replaced and nutrient-depleted surface water are also replaced. This makes increase in plankton population and increase in nutrients at the ocean surface. The movement of the water is vertically up.
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According to the Wilson cycle, the plate motion takes place continuously as a result of which the divergent motion of the continental plates results in the formation of the rift valley and oceans. These continuous divergent motion of continental plates results in the convergent of continental plates at some other places, which give rise to the formation of the large mountain and mountain ranges.
These Mountain ranges are the large geological landforms that are constructed due to the convergent motion of two continental tectonic plates.
For example, the Appalachians were formed due to the collision of the North American and the North African plate, about 480 million years back, which are now separated by the Atlantic ocean
The mountain belt of Urals was formed due to the collision of the eastern European and Kazakhstan continent that occurred from the late Paleozoic time to the early Triassic age.
