The correct answer is - A. Desertification is increasing, and the desert is expanding.
The Sahara desert has been expanding in the past decades, and it has started to overtake territory south of it. This is mainly due to climate changes, the precipitation has been decreasing, the temperatures have been rising, so the desert has slowly crippled into the territories that were once steppes and savannas. There is an organized action from the people that leave on the borderline of the desert, where they have been thought some techniques as to how to stop the desert growing, and they have gladly accepted it and work hard on it. Initially it seems that there are positive results, but for sure only the time will tell.
ONE historical or contemporary example of irredentism and explain how it demonstrates
Explanation:
The Smith–Lever Act of 1914 is a United States federal law that established a system of cooperative extension services, connected to the land-grant universities, in order to inform people about current developments in agriculture, home economics, public policy/government, leadership, 4-H, economic development, coastal issues (National Sea Grant College Program), and many other related subjects. It helped farmers learn new agricultural techniques by the introduction of home instruction.
<u>ANSWER:</u>
The Grand Canyon was formed by erosion.
<u>EXPLANATION:</u>
- The Grand Canyon is a 'Steep-sided canyon' carved by the 'Colorado river'.
- The Grand Canyon is '446 km long', '29 km wide' and has a depth of over 1857 meters.
- The recent studies have showed that the 'Colorado river' and its tributaries ran through the 'area' about '5 to 6' million years ago.
- Since that time, there is constant erosion by Colorado river. In this way the 'Grand Canyon' was formed by 'erosion'.
