Classroom paragraphs error corrections

One of greatest problems the world faces about food supply is starvation. The population has exploded from 2 billion in 1930 to 6.8 billion in 2010 (Black, 2010). This means more people to feed. This problem can be addressed by hybrid rice, which provides a bigger crop in the area planted (Yuan, 2000). The further implication is that hybrid rice can meet the food demand of China, also it can promote the hybrid rice research in other developing countries. Compared with genetically modified crop, it is safer, as it is the result of natural nurture. Therefore, more land can be saved to built houses and other infrastructure. 

One of the greatest problem people face is increasing shortage of land for food production. Using public areas, which are available to plant something to eat, is one approach to produce food yields more.  There is a strong likelihood that some people will disagree with the plan because certain public areas can be used to build the park to be more comfortable and peaceful to surroundings as social space, while the output may increase substantially enough to solve the problem. In addition, it is quite likely that the people might be risk in terms of water pollution if chemical fertilizer is used too much there. Therefore, government may need to release an environmental policy to manage the usage of the land and produce food safely.

One of the greatest problem the world faces is malnutrition. This problem can be addressed by encouraging local food production system. An example is hybrid rice in China, which increasing the volume of rice production. This not only could solve the starvation issue in China, but significantly increase the nutritional level. However, this solution is not appropriate for everywhere such as high altitude area.

A further major causes for concern is he impact of food shortage of population explosion. Part of the solution is implementing one-child policy to reduce the population growth. This can have a negative impact on labor force, because the average age will continue to grow dramatically. The result could be an extremely low amount of people with working abilities. Moreover, the responsibility of young families could be much better than before. Due to the phenomenon called four-two-one.