Answer:
Soil erosion causes siltation in rivers, dams, etc. In some areas, huge river deltas are formed (such as River Nile delta) because of soil erosion. Such places are good for agriculture but not good for urbanization. However, some people do not care about it, they just want to construct buildings on alluvium type soils.
Answer:
How does carbon dioxide affect orca?
Image result for Carbon dioxide Direct effect on orca
Once those waters return to the ocean floor, they can take with them large amounts of carbon dioxide, sequestering the gas away for hundreds or thousands of years
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