The Symbols +, -, and 0 Are Used to Show

question 17

Multiple Choice

The symbols +, -, and 0 are used to show the results of interactions between individuals and groups of individuals. The symbol + denotes a positive interaction, - denotes a negative interaction, and 0 denotes interactions in which individuals are not affected. The first symbol refers to the first organism mentioned. Which fact is correct when describing species interactions?

• A) +/0 will always remain such.
• B) A +/- interaction could shift to +/0 or +/+ over time, depending on other factors such as competition, population density, or environmental changes.
• C) Species interactions occur in isolation and cannot affect the structure of ecological communities.
• D) A -/- interaction benefits both of the species in the relationship.

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Definitions:

International Rates

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A medication approved for the treatment of premenopausal women with hypoactive sexual desire disorder, functioning by affecting serotonin levels in the brain.

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A range of problems related to arousal, desire, orgasm, and pain during sex that cause significant distress or interpersonal difficulty for women.

Biological Functioning

The processes and actions by which living organisms operate and maintain life, including physical and physiological mechanisms.