Trả lời giúp mình, ngắn gọn nhất có thể ạ. 1. How many kinds of pollution 2. Talk about one kind of pollution. 3. How to reduce pollution at your school? 4. How to protect the environment?

There are many types of pollution: water pollution, air pollution, land pollution, garbage pollution. In which, water pollution is one of the issues that need attention. Water pollution is now on an increasing and alarming trend. The cause of water pollution is due to domestic waste, agricultural and industrial production processes, from urban areas causing heavy pollution to the environment. From the above causes, it has polluted the water source and the surrounding environment. To overcome environmental pollution, we need to raise the awareness of using and treating waste, building a recycling and wastewater treatment system to help protect the ecosystem and overcome pollution.
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