Having been filled, drained, converted to farmland, or lost due to coastal erosion, the loss of what worldwide has been extensive.

Having been filled, drained, converted to farmland, or lost due to coastal erosion, the loss of worldwide has been extensive.Need help? Review these concept resources.

Read the following passage to answer Questions 15 to 17Erosion of America's farmland by wind and water has been a problem since settlers first put theprairies and grasslands under the plow in the nineteenth century. By the 1930s, more than 282 millionacres of farmland were damaged by erosion. After 40 years of conservation efforts, soil erosion hasaccelerated due to new demands placed on the land by heavy crop production. In the years ahead,soil erosion and the pollution problems it causes are likely to replace petroleum scarcity as thenation's most critical natural resource problem.15. Today, soil erosion in America ___.A. causes humans to place new demands on the land.B. is worse than it was in the nineteenth century.C. happens so slowly that it is hardly noticed.D. is the most critical problem that the nation faces.E. is worse in areas which have a lot of petroleum production.16. The author points out that erosion in America ___.A. has damaged 282 million acres ever since settlers first put the prairies and grasslands under theplough.B. has been so severe that it has forced people to abandon Settlements.C. occurs only in areas with no vegetation.D. can become a more serious problem in the future.E. was on the decline before 1930s.17. It is pointed out that in America ___.A. petroleum is causing heavy soil erosion and pollution problems.B. heavy crop production is necessary to meet the demands and to prevent a disaster.C. soil erosion has been hastened due to the overuse of farming lands.D. water is undoubtedly the largest cause of erosion.E. there are many ways to reduce erosion.Year

Each day, hundreds of animals lose their habitat 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.What does the author's word choice most clearly suggest regarding his feelings about deforestation?A.He illustrates the sad and irreversible process of forest turning to desert.B.He uses the words "lose" and "loses" to express how precious and irreplaceable forests are.C.He describes the soils as "once-fertile" to express optimism that they may one day be fertile again.D.He uses the phrase "each day" to show that deforestation is carefully planned in predictable amounts.SUBMITarrow_backPREVIOUS

South Africa has lost a large area of natural habitat in the last four decades, due to-Select one:a.Deforestationb.Vast developmentc.Overpopulationd.All of the above

Read the following passage:Each day, hundreds of animals lose their habitat 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 the main idea of this passage?A.There will be serious short- and long-term consequences if deforestation continues at present rates.B.If humans don't create alternative habitats for wildlife, we face the extinction of many species.C.Deforestation causes endangered animals to move closer to human settlements, which is dangerous for animals and people.D.Although an area the size of Panama may not sound large, it is large enough to affect global landscapes.SUBMITarrow_backPREVIOUS