The Amazon rainforest is the largest rainforest in the world, which plays     1    significant role in     2     (keep) the fine balance of the Earth’s ecosystem. It crosses into eight     3     (country) and covers an area of around 6 million square kilometers. The Amazon River, from which the rainforest gets     4     (it) name, supports many different ecosystems on its journey. They give this area the     5     (rich) biodiversity on the Earth. Of the 390,000 plant species known to us, more than 40,000 can     6     (find) in the Amazon. Each level of the forest forms its own little world, home to different kinds of     7     (live) things. More than 1,300 species of birds and over 400 species of mammals hide among the jungle’s plant life,    8     form the forest’s food chain. The Amazon rainforest is often known     9     the “lungs of the planet”. However, over the past 50 years, about 17 percent of the rainforest     10     (disappear) due to human activities. Can we afford to damage the “lungs of the planet”?