The demand for wood could double by the year 2050; unfortunately, it is still the rain forests that supply the bulk of the world's demand for wood. In 1950, about 15% of the Earth's land surface was covered by rain forests. Today, just 50 years later, more than half of the rain forests have fallen victim to fire and the chainsaw, and the rate of destruction is increasing. Unbelievably, more than 200,000 acres of rain forest are burned every day. That is more than 150 acres lost every minute of every day and 78 million acres lost every year! More than 20% of the Amazon rain forest is already gone, and much more is severely threatened as the destruction continues. Source: "Amazon Rain Forest." Amazon-rainforest.org, n.d. Web. 18 February 2011. Which of the following is a logical inference stating the implied main idea of the passage? Steps should be taken to arrest people who burn tropical rain forests. The destruction of the world's rain forests is a serious problem. The destruction of the rain forests isn't as serious an issue as global warming