An animal is rarely exposed to a fluctuation in a single physical or biological factor
Indicate whether the statement is true or false
True
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In seed plants, an immature male gametophyte is also known as a
A) pollen grain. B) seed. C) sperm. D) cone.
A grass root organization is attempting to preserve a stretch of forest that is being considered for purchase by a manufacturing plant
The organization's main strategy is to inform the nearby housing developments of the effect on their home values if the manufacturing plant goes versus the preserved forest. This approach is using ________. A) contingent valuation B) hedonic valuation C) scare tactic valuation D) market valuation E) travel-cost valuation
The surface mixed zone is characterized by ________
A) high density water near the surface that rapidly decreases in density with depth B) a mixture of temperatures and densities to a depth of about 300 to 450 meters depth. C) low density water near the surface that rapidly increases in density with depth D) a rapid change from warm temperatures on top to cold temperatures at a depth of about 300 meters E) nearly constant temperatures to a depth of about 300 meters
The National Forest Management Act of 1976 guidelines included all of the following EXCEPT
a. consideration of economic factors. b. soil protection. c. increased harvesting under times of economic stress, even if not sustainable. d. provisions for species diversity.