Rainforests circle the globe for twenty degrees of latitude on both sides of the equator. In that ___(48)___ narrow band of the planet, more than half of all the species of plants and animals in the world make their home. Several hundred different ___(49)___ of trees may grow in a single acre, ___(50)___ just one of those trees may be the habitat for more than ten thousand kinds of spiders, ants, and other insects. Unfortunately, half of the world’s rainforests have already been destroyed, and at the current rate, another 25 percent will be lost by the next year. Every sixty seconds, one hundred acres of rainforest is being cleared. By the time you finish reading this passage, two hundred acres will be destroyed. When this happens, constant rains erode the former forest floor and the ecology of the region is altered forever. Thousands of spices of plants and animals are ___(51)___ to extinction and, since we are not able to ___(52)___ ramifications of this to a delicate global ecology, we do not know what we may be doing to the future of the human species as well.