Examine the Geologic Timescale Shown Here

question 69

Multiple Choice

Examine the geologic timescale shown here. Which is the earliest period listed in the Mesozoic?

• A)Cambrian
• B)Permian
• C)Triassic
• D)Cretaceous

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Definitions:

Peripheral Nervous System

The part of the nervous system outside the brain and spinal cord, including nerves and ganglia, responsible for transmitting information to and from the central nervous system.

Voluntary Movement

Movement controlled by the individual's conscious mind, primarily involving the skeletal muscle system.

Homeostasis

The process by which a living organism or cell maintains a stable internal environment despite changes in external conditions.

Reticular Activating System

A network of neurons in the brainstem that plays a key role in regulating wakefulness and sleep-wake transitions.