Each day, hundreds of animals lose their habitats as trees are cut down. every year, our planet loses an area of forest the size of panama. when once-fertile soils have been exposed to sun and wind for several years, they turn to desert. which statement best describes how the structure enhances a reader's understanding of the passage? a. it shows how cutting down trees affects people. b. it uses a formal tone to highlight the serious nature of the problem. c. it traces the effect of cutting down trees over time. d. it uses a problem-solution structure to present ways to restore natural habitats.