The world population today is about 7 billion. But only about 11 percent of the world’s land is suitable for farming. However, the area of farmland is becoming smaller and smaller (1) . So it will be difficult to feed so many mouths. There are several reasons why farmland is being (2) . First, a lot of land is being used for the (3) of houses. Secondly, some of land has become wasteland because wind and (4) have removed the top soil. Thirdly, some of land has become too salty to (5) . Therefore, a big problem that we face today is hunger. The world population today is about 7 billion. But only about 11 percent of the world’s land is suitable for farming. However, the area of farmland is becoming smaller and smaller (1) . So it will be difficult to feed so many mouths. There are several reasons why farmland is being (2) . First, a lot of land is being used for the (3) of houses. Secondly, some of land has become wasteland because wind and (4) have removed the top soil. Thirdly, some of land has become too salty to (5) . Therefore, a big problem that we face today is hunger.