Over the past million years, Earth's globally averaged surface temperature has risen and fallen by about 5˚C in ice-age cycles, roughly every 100,000 years or so (Figure 2.1a).
Answer:
Southeastern region
listen) kən-TUK-ee, UK: /kɛn-/ ken-), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States, bordered by Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to the east; Tennessee to the south; and Missouri to the west.
Explanation:
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.
