To rise in atmosphere temperature is known as the green house effect. The carbon dioxide is primarily responsible for temperature rising in atmosphere. The carbon dioxide is given off when coal & oil are burnt. As a result, the ice covering of the north & south poles is melting & may eventually led to a rise in sea levels, which can flood many areas of the world. Scientist have given warning that some parts of coastal countries including Bangladesh may go under water due to green house effect. The total area of deserts in increasing every year. Many species of animals & plants are endangered with the threat of extinction, Cutting down of forests must adopted soon. Proper steps should be taken to put an end to the causes & sources of emitting carbon dioxide. These are the measures. I prefer to adopt with a view to stopping green house effect.
Physical exercise means the regular movement of the limbs of our body according to rules. It is essential to keep our body fit & mind sound. There lies a close connection between body & mind. We can not think of a sound mind without a sound health. It is physical exercise which enables us to build a good health. Physical exercise makes our body active & the muscles strong. It also improve our power of digestion and blood circulation. It gives strength to our brain. A machine gets rust for want of proper use. Human body is also a machine. It becomes inactive & weak for want of exercise. So we should take regular physical exercise in order to maintain a sound health and lead a happy life.
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