A Species of Grass Is Affected by the Amount of Rainfall

question 36

Multiple Choice

A species of grass is affected by the amount of rainfall in the spring. In years of high rain, the grass survives better than in years of low rain. This is an example of

• A) demographic stochasticity.
• B) environmental stochasticity.
• C) damped oscillations.
• D) population cycles.

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Definitions:

Method

A planned way of doing something involving systematic and orderly steps or techniques to achieve a desired result or solve a problem.

Method of Agreement

A principle in inductive reasoning that if two or more instances of a phenomenon share a single common condition, then the condition is likely to be a cause of the phenomenon.

Necessary Condition

A condition that must be present for an event or situation to occur; without it, the event cannot happen.

Sufficient Condition

A condition that, if satisfied, guarantees the occurrence or validity of another event or condition.