Why Isn't the Precambrian More Finely Divided into Sub-Divisions Like

question 2

Multiple Choice

Why isn't the Precambrian more finely divided into sub-divisions like periods and epochs?

• A)Fewer and less diverse fossils exist in Precambrian rocks.
• B)Precambrian rocks don't have radioactive isotopes in them.
• C)Geologists just don't care about the Precambrian the way they do about more recent time periods.
• D)The Precambrian lacks the igneous rocks that are most useful for radiometric dating.

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Definitions:

Death

The cessation of all biological functions that sustain a living organism.

Irreversible

Unable to be undone or altered.

Piaget

A Swiss psychologist known for his pioneering work in child development, specifically his theory of cognitive development that describes how children's intellectual abilities evolve through four stages.

Cognitive Development

The growth and change in mental capabilities over time, including learning, memory, problem-solving, and decision-making.