Section b all please
1. Pollution means introduction of harmful substances into the natural environment that causes instability,disorder,harm or discomfort to the ecosystem. There are different types of pollution like air pollution, light pollution, water pollution, littering, soil pollution, thermal pollution, radioactive pollution, etc. Pollution has adverse effects on the environment. Pollution leads to health hazards like cardiovascular diseases, respiratory diseases, throat inflammation, chest pain and congestion.
In view of the ill effects of pollution, the governments of all the countries of the world have passed stringent legislation to control pollution. Many governments have introduced CNG run public transport, solar energy, recycling of wastes to check pollution. Various awareness programmes are being undertaken to make the public aware about the evil effects of pollution. Pollution is a major threat to the survival of human beings, indeed, all living beings.
Due to paucity of time we would only be able to answer one question. You can ask the other question in a separate thread.