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.
Answer:
The British believed that if Americans moved west over the mountains, it would be too challenging to regulate trade and taxes, and that their resources would be spread too thin. In addition, there were many people already living on the land in the Ohio Valley. There were other people settled in the Ohio Valley as well.
Air pollution is an example of a environmental hazard. Air pollution is caused by the burning of fossil fuels. Pollution is also caused by the gases released from factories and cars. Air pollution leads to many breathing problems, one being asthma. It can also cause global warming. Last, some of the harmful chemicals can cause acid rain. These are a few of the many effects of air pollution.
There are various ways, you can recycle or the use of hydroelectricity. Hydroelectricity is energy of water turning turbines or wheels in a dam. There is also air power through windmills. <span />
