Topic 1 : Environmental pollution is a problem that attracts the attention of the whole society. So, what is the nature of environmental pollution? It is a change in the nature of the environment, causing one or more physical and chemical indicators to exceed the permitted level. The main cause of this phenomenon is due to the lack of human consciousness: not handling waste properly, using too much plant protection chemicals or simply throwing rubbish indiscriminately ... Oh Environmental pollution has become a global problem, leaving unpredictable consequences both long-term and long-term. Rough human intervention in nature destroys ecological balance, deprives habitat and drives many species of animals and plants to extinction. At the same time, the greenhouse effect is happening with increasing intensity, causing the Earth's temperature to rise at a record level, resulting in a range of consequences: climate change, rising sea levels, submerged land ... Environmental protection is not only the job of the government or scientists. It is the duty, responsibility, and right of all of us.

Topic 2 : Flooding is one of the most dangerous disasters in the world. The fact that every flood causes damage is not only property but also people. In Vietnam, the S-shaped land located in Southeast Asia is badly affected by floods, especially in central Vietnam. Every year, about 10-15 floods occur in Vietnam. The main reason is heavy rainfall with an annual average rainfall of 1500-2000 mm due to its location. The influence of monsoon is also a reason why Vietnam is affected by typhoons and tropical depressions. Moreover, beside the sea, tides cause floods in many areas with poor drainage systems. In addition, global warming leads to rising sea levels and deforestation makes the problem more serious. Floods destroyed land, rice fields, and houses, damaging facilities in the middle region. People lost their homes and even lives due to floods. I hope that Vietnam will have a more effective solution in the future and that the locals in the central region will have a better life.