Ten million years from now, the African Rift valleys will resemble the current Red Sea.
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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.
In most cases, as altitude increases, the air in the troposphere cools. Vertical mixing occurs as a result of warm air rising. However, a layer of cool air may form beneath a layer of warm air on occasion. Temperature/thermal inversion refers to this deviation from normal temperature.
When an inversion occurs, polluted areas (such as London and Donora PA) experience unhealthy air and an increase in smog because pollutants are trapped at ground level rather than circulating away.
Answer:
Explanation:
The team will obviously known that they have reach the crater because during impact the rock would have ungergone contact melting of the rock. However, the rock maybe composed of angular fragments in a matrix that may be similar or a different material underneath the crater. Suppose the scientist drilling further down the surface, there will be presence of little or no impact. But inside the crater there will be fragments of broken rocks. They will observe the shocked minerals and the drill will eventually located the undisturbed sequence of rocks at the crater floor.