題組 (63-67) The world’s forests are gradually shrinking, especially in poorer countries. This unfortunate situation is 63. the result of a mix of bad policies, population growth and poverty. Most of the bad news has come from South America, particularly Brazil, but richer regions such as Australia are also affected. War zones are particularly 64. In South-East Asia, illegal logging flourishes, and Indonesia’s orangutans are among the species that have suffered from it. In addition to its effect on biodiversity, poor forestry management also plays a part in causing big fires, although improved 65. techniques are being developed. In addition to good management, and cooperation between government, industry and environmentalists, the conservation of forests can be aided by 66. . One day, genetically engineered trees may make plantations faster to mature and more economically viable, and thus 67. the pressure to hack down wilderness forest.