A rainforest is an area{#blank#}1{#/blank#}(cover) by tall trees with the total high rainfall spreading quite equally through the year. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.{#blank#}2{#/blank#}the forest cover, these areas would reflect more heat into the atmosphere,{#blank#}3{#/blank#} (warm) the rest of the world. Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters all over the world.

    In the past hundred years, humans {#blank#}4{#/blank#}(begin) destroying rainforests in search of three major resources: land for crops, wood for paper and other products, land for raising farm {#blank#}5{#/blank#} (animal). This action affects the environment as a whole. For example, a lot of carbon dioxide in the air comes from burning the rainforests. People{#blank#}6{#/blank#}(obvious) have a need for the resources we gain from cutting trees,{#blank#}7{#/blank#} we will suffer much more than we will benefit.

    Rainforests are often called the world's drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their {#blank#}8{#/blank#}(medicine) value. It is extremely likely {#blank#}9{#/blank#}our best chance to cure diseases {#blank#}10{#/blank#}(lie) somewhere in the world's shrinking rainforests.