Model Answer 1:
In the past few decades, mankind has made tremendous technological advances and world has truly become a small village because of globalization. Now, more and more people are able to afford cars. This has caused increase in level of noise and air pollution in large cities.
One solution would be to impose a large amount of tax on privately owned cards. This would discourage people to use their own vehicle to commute to work and utilize other means of public transport. This can definitely reduce the traffic in urban city areas. However, this only deals with a part of the population. Rich could easily afford to pay for the higher tax; while on the other hand, only poor would be affected by this law.
Another way government could tackle this problem is to encourage people to use public transportation. The legal authorities could introduce more comfortable and convenient trains, buses and metros to attract more people. As a result, more and more citizens would use public transport services and thus the level of traffic and pollution would definitely reduce.
Lastly, politicians should put more money into researches to find more renewable resources such as solar power and wind instead of using coal and petrol. In addition, there could be seminars or lectures to educate people about how our ways of living is affecting the environment. This may not be a quick solution but it does help to tackle the issues at hand in long run.
In summary, it is partly government's and partly individual's responsibility to pay attention to increasing pollution and find ways to reduce it if we want to leave a greener planet to our children.