A Collection of Organisms and the Environment with Which They

question 35

Multiple Choice

A collection of organisms and the environment with which they interact is called a(n) :

• A)ecosystem
• B)habitat
• C)food web
• D)horizon

---

Definitions:

Hypothalamus

A region of the brain responsible for producing hormones that regulate body temperature, hunger, moods, release of hormones from many glands, especially the pituitary.

Cerebral Cortex

The outer layer of the cerebrum in the brain, involved in many complex brain functions including memory, attention, perception, cognition, awareness, thought, language, and consciousness.

Estrus

In mammals, the period in the cycle when the female is sexually receptive (in heat).

Hypothalamus

A region of the brain below the thalamus that coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, hunger, thirst, fatigue, sleep, and circadian cycles.