The Soft- Bodied Fossils of the Burgess Shale Were Preserved

question 66

Multiple Choice

The soft- bodied fossils of the Burgess Shale were preserved by_________ as thin carbon films, due to the selective loss of more volatile components.

• A) carbonation
• B) replacement
• C) carbonization
• D) petrification

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Definitions:

Motor Neurons

Nerve cells that transmit signals from the brain or spinal cord to muscles or glands, causing them to contract or secrete.

Reflexes

Automatic, involuntary responses to specific stimuli that are designed to protect the body and maintain homeostasis.

Blood Pressure

The force that circulating blood exerts against the walls of the arteries as the heart pumps.

Painful Stimuli

External or internal factors that cause the sensation of pain, triggering a response from the nervous system.