Answer:
Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.
Explanation:
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The erosion causes physical changes of the environment. This process is responsible for braking down rocks to smaller pieces, and even making them sandy over time. Once this is done, the erosion is slowly (occasionally in a sudden manner) is starting to remove layers of the surface of a particular place, and moving them to another place (which is the process of deposition), thus changing the physical appearance of the place. The erosion is process that has the tendency to flatten the natural features.
One of the biggest environmental problems of sub-Saharan Africa is the deforestation. In order to produce food, or make some profit, the majority of the people tend to destroy the forests. This is usually done with the clear cutting or slash-and-burn methods. While this works on the short run, usually 3-4 years, after that short period the land can not be used as it has been severely degraded and eroded. In order to be able to continue producing food, the people continue to do the same, living behind large areas of barren and destroyed land. The deforestation also causes desertification, which makes the land unusable for generations to come or more, except if smart policies are not undertaken. The environment is totally destroyed as well, with numerous plant and animal species losing their habitats or being directly destroyed, putting them on the endangered list.
