According to a new study, the Amazon rainforest may become grassland in a few years.
The Amazon is the world's biggest rainforest. Climate change and human activities make it "sick". Usually, the rainforest can fix itself. The trees may die and the rainforest could turn into a hot, dry grassland.
The Amazon is one of the world's wettest places. But since 2005, three droughts（干旱）have hit the rainforest. The trees don't have enough water to grow. What's worse, as they become dry, they can easily catch fire.
On top of this, people cut down rainforest trees for wood. They burn the forest to make farmland. They clear trees to find minerals（矿产）.
What will happen if we lose it?
The Amazon is like the lungs（肺）of our planet. The rich plants there take carbon dioxide out of the air and make oxygen. They make more than 20 percent of the planet's oxygen. If the Amazon "dies", there will be more CO2 and our Earth will become even hotter.
. Many of them can't live anywhere else. They would very likely just disappear.
A. They were caused by climate change.
B. The Amazon is also home to over 3 million animals and plants.
C. But now, it feels too "tired" to get better.
D. Why is the Amazon "sick"?
E. The Amazon River runs through the rainforest.
F. All these activities have caused about 17 percent of the rainforest to disappear.
