Tropical rain forests grow in warm, wet areas ---- Central America South Amereica, Arica, and Southeast Asia . Because it rains a lot there . With __a____ rain , the soil in rain forests is _____b____ dark and rich for plants to grow. More than half of the ___a___ plants in the world grow in rain forest. Thousands of animals live in them, __a_____.
Rain forests _____a__ less than 8% of the earth, but more than 50% of the plants and animals on the earth live in them. Thick plants make _____c__ to go very far into the forest. Most exploring must be done on foot, or ____b___. Therefore, there are large areas that haven't been ______d__ yet.
Tropical rain forests are rich __c____ food, medicine and other useful things .
Today , ____b___, rain forests are threatened (威胁) by such things ____b___ acid rain() from factory smoke emissions (散发) around the world and from farm expansion(扩张) .A lot of rain forests are burned or cut down each year. The land _c____ farming of for building factories. ___c___ the loss of rain forests , 1000 kinds of plants and animals become extinct(灭绝).
Many people understand the importance of saving the rain forests. Many countries are making rain forests into national parks. Farmers are being taught ___a_____ crops without hurting the rain forests.
Perhaps you can do ___c___ to help protect the rain forests of the earth. |
