Communities Change with Respect to Several Timescales; an Example of Long-Term

question 26

Multiple Choice

Communities change with respect to several timescales; an example of long-term change would be

• A) the annual variability in population size.
• B) the presence or absence of a migrant species.
• C) the species composition of the community.
• D) the decline in prey abundance during a harsh winter.

---

Definitions:

Central Nervous System

The complex network of the brain and spinal cord responsible for processing and coordinating incoming and outgoing neural signals.

HIV

Human Immunodeficiency Virus, a virus that attacks the body's immune system, leading to AIDS if not treated.

Xanax

A prescription medication, generically known as alprazolam, used to treat anxiety and panic disorders.

Depressant Drug

A substance that slows down the activity of the central nervous system, resulting in reduced arousal or stimulation.