Small Bodies Like Asteroids and Comets Are Unlikely to Harbor

question 50

Multiple Choice

Small bodies like asteroids and comets are unlikely to harbor life because they

• A) are constantly colliding with each other, sterilizing any life that may be present
• B) have not had liquid water inside them for extended periods now or in the past
• C) do not contain any organic molecules
• D) are so far from the Sun that any water would be permanently frozen

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Definitions:

Myomalacia

Softening of the muscle tissue.

Softening

The process of making something softer or less rigid, often through the addition of moisturizers or water.

Muscle Tissue

A body tissue composed of fibers capable of contracting to effect bodily movement.

Excitability

The ability of a cell or organism to respond to external stimuli and generate a response.