Why Is There Very Little Physical Evidence of Life from Rocks

question 34

Multiple Choice

Why is there very little physical evidence of life from rocks of the Archaean eon?

• A) Those rocks have been deeply buried in most parts of the world.
• B) Those rocks occupy inaccessible areas of mountainous regions.
• C) Those rocks have been greatly eroded in most parts of the world.
• D) Those rocks occupy the polar regions and are thus covered by glaciers.
• E) Those rocks have been deposited in oceanic trenches deep in the oceans.

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Definitions:

Huntington Disease

Autosomal dominant genetic disorder that affects the nervous system; results in a progressive loss of neurons in the brain.

Alzheimer Disease

Disease of the central nervous system (brain) that is characterized by an accumulation of beta amyloid protein and neurofibrillary tangles in the hippocampus and amygdala.

Parkinson Disease

A degenerative disorder of the central nervous system that primarily affects movement, often including tremors and stiffness.