Writing Practice. Please check. Thank you. Many parts of the world are losing important natural resources, such as forests, animals, or clean water. Choose one resource that is disappearing and explain why it needs to be saved. Used specific examples to support your opinion. As technology constantly advances, the environments are also changing significantly. Although some see the forest as a place for outdoor activities such as hiking and camping, forests have more functions than everyone expects. I will provide 3 reasons why forests need to be saved. To begin with, trees play a critical role in filtering the air. Nowadays, there are more and more factories emitting toxic chemical gas into the air, gradually causing air pollution. In my country, air pollution issue is a current focus of public debate. Because of limited trees to filter the air and excessive gases emit into the air, people in my country live in the environment that raises the risk of respiratory disease. Thus, losing forests will affect our lives greatly. Secondly, at least more than half the existing animals will die in the future, if forests, their habitats, are being reduced. For example, birds cannot live without trees, because they feed on caterpillars, which consume leaves. Therefore, it is obvious that creatures completely rely on forests, and once they are removed by people, we can expect that we will suffer from severe famine in the future. Last but not least, the greenhouse effect is now more familiar with people. Since people are developing technology, certain gases such as carbon dioxide and methane are releasing mostly by factories and transportations. These gases cannot penetrate the ozone layer, resulting in the famous phenomenon, global warming. To solve this problem, trees are pivotal in this circumstance. They reduce the gases through photosynthesis, bringing back a healthy season pattern to the earth. In conclusion, it is clear losing forests can have a significant impact on human. Of course, I understand that some might disagree with my position on this matter; however, I think the pieces of evidence provided above are strong enough to support my stance on this issue.