Which of the Following Best Describes an Invasive Species

question 17

Multiple Choice

Which of the following best describes an invasive species?

• A) An invasive species is any non-native introduced species, whether it becomes established or not.
• B) Non-native species become invasive when they become established in a new area, taking over niches that were already occupied by native species.
• C) Dispersal, even if anthropogenic, is a normal biogeographic process and, therefore, no cause of alarm.
• D) Approximately 90% of all introduced non-native species become invasive species.

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Definitions:

Life Change Units

A measure used to assess the stress level of different types of life changes, where each event is assigned a score to indicate the level of stress it might cause.

Social Readjustment Rating Scale

A scale measuring the stress level of individuals through the tally of significant life changes they have experienced.

Major Life Event

A significant occurrence or change in an individual's life, such as marriage, the birth of a child, or a career change, that can have a substantial psychological impact.

Social Readjustment Rating Scale

A psychological tool that measures the stress level of individuals by assigning numerical values to life events, used to predict the likelihood of illness.