Many Introduced Species Have Deleterious Effects on Communities and Ecosystems

question 7

Multiple Choice

Many introduced species have deleterious effects on communities and ecosystems because

• A) coevolved parasites and competitors are absent.
• B) the introduced species are long-lived.
• C) predators prefer the introduced species; therefore, the local prey proliferate to dangerously high levels.
• D) the communities from which they came lost an important predator, competitor, or parasite.
• E) all of these occur.

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Electroconvulsive Therapy involves administering electric shocks to cause seizures in patients as a means of treating psychiatric disorders.

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Therapeutic Effects

The beneficial outcomes resulting from treatment interventions, aimed at relieving symptoms or curing diseases.