Luyện tập tổng hợp

Nguyễn Võ Văn Hùng

Đoạn văn này hoàn chỉnh chưa

Nowadays, pollution is a popular term with everyone in the world and air pollution is one type of pollution. The definition of air pollution is one such form that refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. There are some main reasons which cause air contamination such as burning of fossil fuels, agricultural activities, exhaust from factories and industries, mining operations, and indoor air pollution. Air pollution always has bad effects on our life. Harmful gases, dust, and smoke enter into the atmosphere and make it difficult for plants, animals and humans to survive. We also can see some examples of the result of air contamination which occurs around us as global warming, acid rain, and depletion of ozone layer. The effects of air pollution are alarming, so governments over the world should have suitable policies of protecting the environment, especially air quality to create a clean world for our generation in the future.

Nguyễn Thị Nguyệt
24 tháng 3 2017 lúc 18:56

It was rightok

vương nguyên siêu cute
25 tháng 3 2017 lúc 18:17

batngo


Các câu hỏi tương tự
Nguyễn Minh Phương
Xem chi tiết
Tran Hai Long
Xem chi tiết
bơ barca
Xem chi tiết
Tuấn Hương
Xem chi tiết
Trang Nguyễn
Xem chi tiết
Hermione Granger
Xem chi tiết
Trang Nguyễn
Xem chi tiết
min suga
Xem chi tiết
Tâm Phạm
Xem chi tiết