Do you think that we are using up the resources for our survival?
Anh văn - Lớp 11
Do .you know when automobiles were invented?
Anh văn - Lớp 11
Large amounts of dangerous waste are daily by the factory.
Anh văn - Lớp 11
The oil slick seriously threatens life around the islands.
Anh văn - Lớp 11
The pollution problem is very complicated to solve.
Anh văn - Lớp 11