填空题 Rainforests are critically important to our well-being. Because they 31 carbon dioxide, a greenhouse gas, and produce oxygen. They are sometimes called the 32 of the planet. Despite the fact that rainforests cover only 12 percent of the land-area of the Earth, they are home to between 50 and 90 percent of the world"s plant and animal species, and for local populations they are a 33 source for food, fiber, fuel and medicines. Tropical forests regulate global and regional climate-systems, and release 34 into the atmosphere, which then returns to earth in the form of rain.
But where the land has been logged, there are no longer trees to produce the rain cycle which 35 the atmosphere, or to reduce carbon dioxide levels, contributing to climate change. Because of tropical deforestation, animal and plant habitat is 36 , and at least one species dies out every day.
Thus, the United States has partnered with the private sector, other governments and civil society organizations to form the Tropical Forest Alliance 2020, or TFA 2020. The alliance aims to mobilize and 37 actions by all partners to reduce tropical deforestation related to key agricultural commodities such as palm oil, soy, beef, and paper and pulp.
The United States has 38 worked to promote the conservation of tropical forests by advancing innovative and cooperative development 39 , diverse technical expertise and services, and diplomatic leadership. With the new multi-national, public-private TFA 2020 partnership, we 40 further increasing the breadth of our engagement.