Rivers are lifelines in many dry regions of Africa. They provide the necessary water for agriculture, household uses, transport, and biodiversity. They fill the wetlands of inland and coastal deltas with fresh water, thereby maintaining the inhabitant’s livelihoods and biodiversity of these dynamic areas
Answer:
The Oceans are saline or salty because of the several natural occurrences. One of the reason is the rivers because it brings water with minerals by crossing over soil and stones, moving salt along the way, which adds into the oceans, results in salinity by evaporating the water.
Ocean salinity levels can change from place to place. The Mediterranean Sea is saltier. The Atlantic Ocean has access to the freshwater rivers, such as the Amazon which provide less salinity in the ocean.
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A rugged area with large variations in elevation would have high relief, whereas a relatively flat location would have low relief.
Maps that capture data approximately alleviation are termed topographic maps. Maximum geologic maps include topographic information inside the form of contour strains.
Comfort is the distinction between lowest and highest elevation in a location. Only a few surfaces on the earth are genuinely flat. We describe deviations from flatness as relief.
Similarly to showing absolute elevation, contour strains, by means of their spacing, monitor the steepness of slopes at a look. On a steep slope, they have got close collectively.
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It is estimated that 100 million animals die every year due to water pollution.
In addition, ocean pollution affects 1,000 species of marine animals. However, these are rough estimates because it is almost impossible to calculate the exact number of animals killed by water pollution. Polluted water can pose a serious threat to both animals and humans. Animals and plants living in this water often die from this pollution.
Even if a particular animal did not die from pollution, it would likely die from changes in the food chain. Animals and people who drink water from this source can contract bacteria and diseases that are often carried in this water.
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