Mahsulot tavsifi
People have always polluted their surroundings. Even in ancient times people admitted that their health was depending on the state of surroundings. But only in XX century humanity, in full measure, realized , that many diseases are closely connected with the air and water pollution and inferior products.
#english#about#problems#ecological#pollution#air#lenguage#presintation
Muallif

Freelancer 007Tasdiqlangan muallif
- Hujjatlari
- 939
- Sotilgan
- 566









