​Many Introduced Species Have Deleterious Effects on Communities and Ecosystems

question 6

Multiple Choice

​Many introduced species have deleterious effects on communities and ecosystems because ____.

• A) ​coevolved parasites and pathogens are absent
• B) ​the introduced species are long-lived
• C) ​predators prefer the introduced species, resulting in proliferation of native prey species
• D) ​the community from which they came lost an important predator, competitor, or parasite
• E) human beings do not know how to appreciate them​

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Definitions:

Sexual Intercourse

A physical act between individuals that involves the stimulation of genitals, typically resulting in sexual pleasure and/or reproduction.

Current Norms

The prevailing standards, behaviors, or beliefs in a society or social group at a given time.

Marriage Gradient

The tendency for men to marry women who are slightly younger, smaller, and lower in status, and women to marry men who are slightly older, larger, and higher in status.

Homogamy

The tendency to marry someone who is similar in age, race, education, religion, and other basic demographic.