For millions of years, humans have been involved in the
Our
A. approach B. beneficiaries C. recently D. eliminates E. nutrients F. practices G. irreparable H. threat I. undesirable J. panic K. naturally |
The Beneficial Effects of Forest Fires
Forest fires are undoubtedly a threat. In the mid-1900s, all forest burns were considered
Previously, people believed that forest fires caused
In the past, it was not obvious how forest fires enriched the soil. Today, foresters understand that forest fires improve soil quality by changing the ‘litter’ — dead leaves and branches on the forest floor — to nutrient-rich soil. Normally, litter decomposes very slowly. However, fire releases the
As forest managers have leared more about the long-term effects of forest fires, they have realized that forest fires can have beneficial effects and have changed their forest management
organised destroyed ruins tireless trapped injured |
After the earthquake, the whole city lay in
组卷网是一个信息分享及获取的平台,不能确保所有知识产权权属清晰,如您发现相关试题侵犯您的合法权益,请联系组卷网