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The Phanerozoic and Proterozoic Eons Were Both About 2

question 80

True/False

The Phanerozoic and Proterozoic eons were both about 2.3 billion years long.


Definitions:

Tertiary Level

The third level, often referring to specialized consultative healthcare, typically on referral from primary or secondary medical care personnel.

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Hospice Nurse

A specialized nurse who provides end-of-life care and support to terminally ill patients and their families.

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The process of making a person immune or resistant to an infectious disease, typically by the administration of a vaccine.

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