What ecological traits do successful invasive species possess? How do these traits interact to make controlling them difficult?
What will be an ideal response?
Invasive species possess high fecundity, large dispersal ability, the tendency toward general habitat preference, and an absence of native biotic controls such as competitors, predators, and pathogens. Possessing these traits, elimination can be virtually impossible, even if only a few survive. They are very adaptable to new environments and spread very rapidly once established.
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Describe with a sketch, a wind flow pattern that results in upper-level divergence.
What will be an ideal response?
Which of the following is not a part of the United Nations Human Development Index?
A. life expectancy B. educational attainment C. health D. number of television sets
Under the 1872 US General Mining Law, mining companies are required to pay what percentage of their profits in taxes?
A. 2 percent B. 8 percent C. 12.5 percent D. 15 percent E. No taxes are paid on mining profits.
E-waste often leaches hazardous levels of which of the following metals?
A) lead B) uranium C) gold D) platinum E) silver