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, large phenotypic plasticity, 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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Although Brazil is the largest coffee producer in South America, coffee only constitutes about __________ of its current annual exports.
Fill in the blank(s) with the appropriate word(s).
A device to make crossing borders easier, especially for workers, within the European Union is the formation of ___________________________.
Fill in the blank(s) with the appropriate word(s).
Fan-shaped landforms that develop in deserts adjacent to highlands are known as ____ fans
A)alluvial B)bajada C)playa D)plain E)pediment
Relatively cooler magma in an erupting volcano is apparently the result of ________
A) the amount of water present B) depth of magma formation C) position of astronomical bodies D) surface salinity E) a high amount of silica present