1. Pollution:

Air pollution occurs when the air contains gases, dusts, fumes in harmful amount. It is one of the most serious types of pollution. There are some causes that people make the air polluted. They use too much fossil fuel. They spray pesticides when doing farming and factories produce much smoke. Air pollution can have dramatic effects. It damages humans and animals' heath as well as food crop. It keeps breathing problems and lung cancer increasing. It also causes the global warming and acid rain. Because of these bad effects, we should reduce air pollution by using less fossil fuel, cutting down the amount of pesticides for farming and smoke from factories.  

2. Natural diasters:

On $27^{th}$ February in 2010, an earthquake abou $8,8^{0}$ richter happened in Chile. The land seemed to be violently shaken. People began running as walls started to collapse. All homes, trees and animals were sinked in ruins. Hundreds of people were injured and died. The rest had to take a shelter to protect themselves. Rescue workers digged the ruins to find the victims. After the earthquake had happened, millions of people had to sleep on the street without food and drink and face with poverty. Fortunately, the government have sent food, fresh water, money and medical supplies to the victims. They have also consoled people and planned to prevent earthquake in this area bybuilding basements to provide accomodation for everyone.

3. English speaking contries:

This is the schedule for our two-day visit to Washington D.C. On the first day, we plan to go to the White House early at 8 o'clock. This way, we avoid the crowd. Then, we get on Hop-on Hop-off trolley which rides around the city. We do some shopping and go for a nice lunch. After that, we visit some famous places of the city. On the second day, we take the 8.30 shuttle bus to the canoe club to join a canoe trip along the C&O canal and we can enjoy the beautiful scenery there. This trip takes about 3 hours. In the afternoon, we visit the National Children's Museum. It is said that this museum offer children a lot of fun activities where we can learn through playing. We meet up at 4.30 and the bus leaves at exactly 4.45. I hope to have a great time during the trip.