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1. Two English materials
Clearly explain the types of pollution and their impacts. This is the first of the four benefits of trees. 1. Trees can regulate the climate and maintain ecological balance Trees absorb carbon dioxide and exhale oxygen through photosynthesis, making the air clean and fresh One acre of forest releases enough oxygen for 65 people to breathe 2. Trees can prevent wind and sand, conserve soil and water, and absorb various types of dust. One acre of forest can absorb 20-60 tons of various types of dust per year 3. Forests can reduce noise pollution. A 40 meter wide forest belt can reduce noise by 10-15 decibels 4. The secretions of trees can kill bacteria There are 3-4 thousand bacteria per cubic meter of air in open spaces, while in forests there are only 3-4 hundred Planting trees and afforestation is the obligation of every citizen, and the country has specifically designated March 12th as Arbor Day. Planting trees and afforestation have great benefits for our learning, work, life, and other aspects. Planting trees and afforestation can purify the air, beautify the environment, and green the motherland. It can also produce oxygen for people to absorb and inhale the carbon dioxide exhaled by people. If there is not extensive afforestation, it will be difficult for the oxygen on Earth to meet the needs of humans and various organisms. Planting trees and afforestation can also reduce noise. The pollution of noise has caused great harm to human life, study, work, rest and other aspects, and can be said to be the "enemy" of people. Therefore, we should pay more attention to afforestation. Noise can also cause hearing loss, deafness, and cognitive impairment, as well as abnormalities in the hea


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