Answer to Question 1
Wilderness: Permanent protection of these undeveloped and unexploited areas so that the natural ecological process can operate freely. Permanent structures, roads, motor vehicles, and other mechanized transport are prohibited. Timber harvesting is excluded. Some livestock grazing and mineral development are allowed where such use existed previously; hiking and other similar activities are also allowed.
National Parks and National Wildlife Refuges: The intent is to protect areas of great scenic or unique ecological significance, protect important wildlife species, and provide public access for recreation and other uses.
National Forests: Multiple activities are attempted, such as recreation, timber harvesting, mining, grazing, and protection of watersheds and wildlife.
Answer to Question 2
Three mitigation steps include reducing or stopping the burning of fossil fuels at the source, stopping deforestation (natural carbon sinks), and stopping the of burning forests.
Protostomic versus Deuterostomic development
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Rural versus Urban Population, 1820–1860
Energy passes among trophic levels
Can chichenpox infection elevate the levels of cells?
Tallgrass Prairie: Food Chain and Trophic Levels