... disappearing. More land is used for farms, for houses or industry . Farmers use powerful ĐỀ ÔN THI TỐT NGHIỆP TIẾNG ANH 12 – TUAN 8 Chọn phương án đúng A, B, C hoặc D để hoàn thành mỗi câu sau: 1. How ... threatened, and could easily become extinct if we do not make an effort to ( 47) them. They are many reasons for this. In some cases, animal are (48) for their fur or for other valuable parts ... sewage. Clean water is now scarce, and we’re at last beginning to respect this precious source. We should do something now ! 36. According to the writer, one environmental problem in the world...