Last year in October, today's world population became 7 billion. At the same point, we are going to exceed our limits. This graph shows world population development. It is increasing by 80 million each year. It is same as the population of Germany. The population of developed country have not changed,, but the population of Developing countries have changed dramatically. Some researchers said limits of the world population are about 8 billion. So in 2050, we will exceed our limits.
If we exceed our limits, we will have some serious problems. The biggest one is the lack of land. Especially in developed countries, they loose their living area. Even now, their population density is small. So they cannot live comfortable. Other problems are the lack of food, water and energy. The more population increased, the more we will need land, food, water and energy. So it is said that we need a 2nd earth to live in the future. And also the increasing world population causes global warming. The more population increased, the more people need gases and fuels. So that's why the increasing world population causes global warming.
So we must try to solve these serious problems. First, government should work harder for these problems. For example, they have to think about state budget; in othre words, we need more money to solve them. Second,developing countries need to learn about family planning. In thin case, developed countries can help them to learn about the way of family planning. So we need to help each other. And finally, we need new technologies to help our world. It won't be easy, but if we want to love on this earth, we have to do our best.
