The most serious environmental problem

The most serious environmental problem in the North China is air pollution. Since breathing is the most basic human function required to survive, air pollution will affect everyone’s daily life and most importantly, our health.
Some obvious causes of air pollution would be cars and power plants. Oil and natural gas are the major producers of exhaust gas. These pollutants can cause lung irritation and inhibit the body’s ability to fight off disease such as influenza and pneumonia. However, there are many not so obvious products that you may use everyday will cause potential damage. For example, those pollutants from cars and power plants are decomposed by sunlight and immediately with oxygen to form another kind of pollutant which is ozone (O3). Ozone can cause coughing, choking, and reduced lung capacity. It can also worsen chronic respiratory diseases.
Air pollution will also affect the weather. One of the most serious weather problems which are caused by air pollution is acid rain. It can destroy crop and basify land as a result of being no more suitable for agriculture. We can’t imagine what we could eat without crop.
Last but not least, air pollution can cause other environment problems. As most scientists agree, air pollution and global warming seem to go hand in hand. We are well known that global warming is very serious environment problem which can start to melt ice and cause flooding. We have to solve air pollution and global warming together to prevent those balefulness from happening.
In conclusion, air pollution is an important topic that the North China should focus on for the next 10 years since air is the basic element for human life. Air pollution has many causes, some are obvious that all of us know, but there are many causes are undiscovered which are more dangerous. Therefore, we should start to solve and control air pollution right now.

My Life's Meaning

What’s my life’s meaning? Many of us spend each day of our life searching for, or seeking the simple life answers to this question. Until now, most of my time was spent on study. I always come and go between home and school. Sometimes, I feel confuse and ask myself “what’s my life’s meaning? Is that never-ending exams? Or is that a piece of result transcript? “Finally, I find it: my life will be long learning experience.
Pay attention, learning is not simply about acquiring knowledge from school. It has very broad scope. When I make mistakes, it’s a bad thing, but I can learn from my mistakes to achieve success. It’s one of my life’s meanings. Making friends and sharing happiness and sadness with friends are learning of importance of good-fellowship; spending time with family is to learn how to improve family members relationship; helping others is a learning of sacrifice; traveling is a learning of enjoying nature etc. All of those make my life meaningful. For all its ups and downs, good and bad days, life truly is a wonderful journey.