Which of the Following Is an Example of a Natural

question 48

Multiple Choice

Which of the following is an example of a natural cause of extinction?

• A) Freshwater Great Lakes mussels that compete with the Zebra Mussel
• B) Genetic assimilation as in the case of the hybridization of gray wolves or black ducks with mallards
• C) The passenger pigeon that went extinct at the beginning of this century
• D) An insect species in the tropical forest that cannot escape predation by native bird species in the forest
• E) All of these are examples of a natural cause of extinction

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