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When seeing the news,if you think hard enough,you can understand tangibly that it describes a not uncommon phenomenon that it is as the modern technology further develops and the process of industrialization of all countries that an increasing number of animals and plants are disappearing at an alarming rate. Human activities can cause many environmental changes that can affect plants and animals.Today,it is with expanding global population,especially in developing countries that people are seeking more energy and more space to accommodate the added population.Therefore,people cut down forests and drain wetlands to make land.In order to increase the production of grain and vegetables,farmers use chemicals to kill unwanted plants and insects.Large industries emit high amounts of industrial pollutants,contaminating the air and the water suppliers.Also there are many people who hunt and trap animals for their own economic gains.For example,some folks believe that the bones of tigers can cure certain diseases.Uncontrolled killing of tigers has caused a sharp decrease in the tiger population around the world.These human activities all pose a serious threat to the existence of many endangered species.We should be aware of the damages that human activities have brought to the environment,and we should do our utmost to spread the word out that we must protect our environment,and stop killing the animals.We should make the world a better place to live in not only for us but also for the future generations.
