Describe the progression of management of our national forests during the last half century. What are two current issues, and how are they being resolved?
What will be an ideal response?
Management of our forests began in the 1950s as a multiple use strategy, "which meant a combination of extracting resources (grazing, logging, and mining), using the forest for recreation, and protecting watersheds and wildlife. Although the intent was to achieve a balance among these uses, multiple use actually emphasized the extractive uses; that is, it was output oriented and served to justify the ongoing exploitation of public lands by private, often favored, interest groups."
"A forestry-management strategy was introduced in the late 1980s called New Forestry. This practice of forestry is directed more toward protecting the ecological health and diversity of forests than toward producing a maximum harvest of logs. The Forest Service began adopting some of these management principles in the early 1990s, and they formed the core of what is now the official management paradigm of the Forest Service: ecosystem management. This paradigm has been adopted by all federal agencies managing public lands."
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Which type of use is the main reason why aquifers are being pumped faster than they are being recharged?
A. irrigation B. industry C. drinking water D. power generation
The following reaction is used to make the polymer described below. What is the other starting material?
A. HOCH2CH2OH
B. H2O
C. H2C CH2
D. HOCH2CH3
E. HOCH2CH2CH2CH2OH
When sea levels rise,
A) fresh water on Earth also increases and streams are generally more full. B) fresh water on Earth has flowed into the oceans, so streams are generally less full. C) base levels of river profiles where they reach the sea fall. D) base levels of river profiles where they reach the sea rise.
The tropopause is the boundary between ________
the troposphere and the stratosphere tropical and polar air masses the troposphere and mesosphere two layers of high ozone concentration