Natural Populations Are Affected by Both Density-Dependent and Density-Independent Factors

question 98

Multiple Choice

Natural populations are affected by both density-dependent and density-independent factors. In a population affected mainly by density-independent factors, would you expect natural selection to favor an r-selected or K-selected life history?

• A)r-selected
• B)K-selected

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Definitions:

Passive Euthanasia

The act of allowing a person to die by withholding or withdrawing treatment, rather than actively causing death.

Mercy Killing

The act of killing or permitting the death of a hopelessly sick or injured individual in a relatively painless way, often to alleviate suffering; also known as euthanasia.

Active Euthanasia

The act of intentionally causing the death of a terminally ill patient through a direct action, at the patient's request, to alleviate suffering.

Live Donors

Individuals who donate a part of their living body, such as an organ or tissue, to be transplanted to another person in need.