Many biologists and wildlife conservationists believe that the best way to keep from hastening the extinction of wild species through human activities is to protect threatened habitats and ecosystem services. This is referred to as ____.
A. the wilderness approach
B. ecosystem rehabilitation
C. environmental conservation
D. the ecosystems approach
E. biodiversity consideration
Answer: D
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Make a brief list of five potential onboard lecture topics that might be of interest to passengers on the Crystal Serenity
What will be an ideal response?
During the Pleistocene pluvial lakes formed in the ________ United States as a result of ________
A) southwestern; melting glaciers B) northeastern; melting glaciers C) eastern; ice deposits in till plains D) western; extended periods of wet conditions
The diagram below represents a model that the U.S. Geological Survey (USGS) uses to categorize the extent of storm surge in the coastal zone. The red arrow in this figure points to
A. the height of high tide. B. the radius of motion of water molecules that are part of the waves of oscillation. C. the maximum height of the swash zone. D. the highest rate of discharge from the nearest stream.
Which of the following is valid for how rocks weather?
A) Quartz is very soluble during weathering at low temperatures. B) Limestone weathers rapidly in wet climates but can form cliffs in dry ones. C) As a granite weathers, quartz rapidly decomposes into clay minerals. D) Most minerals in granite weather at nearly the same rate and so granite has smooth surfaces.