The four components of biodiversity increase the ____ of ecosystems and increase the resistance of ecosystems to harmful invasive species.
A. evenness
B. function
C. strength
D. stability
E. fitness
Answer: D
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Despite its great size, the United States has no dialects
Indicate whether this statement is true or false.
A child shoots peas through a drinking straw. The emerging pea will be faster for a
A. full-length straw. B. half-length straw. C. either of these D. none of the above
How might hydrothermal ore genesis occur?
A) Hot seawater rushes through porous rocks and crystallizes on contact with the rocks. B) Cold seawater meets hot circulating hydrothermal fluids and precipitation occurs. C) Two rock masses meet at a hydrothermal vent and the heat of the water dissolves ions from both masses. They recrystallize when they are carried to cooler water. D) Hot water from a hydrothermal vent dissolves ions from one rock mass and reprecipitates them as ore in cooler water.
A dendritic (tree-like) drainage pattern develops in regions where the underlying material is relatively uniform so the major control on the water movement is ________
A) climate B) vegetation C) slope D) sediment load E) saturation