By ____ Years Ago, Much of Greenland, Central Canada, and the North

question 2

Multiple Choice

By ____ years ago, much of Greenland, central Canada, and the north central United States formed one large craton.

• A)1.8 million
• B)2.0 billion
• C)1.6 billion
• D)1.6 million
• E)1.8 billion

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Definitions:

RNA

Ribonucleic acid, a molecule essential for various biological roles such as coding, decoding, regulation, and expression of genes.

Cofactor

A non-protein chemical compound or metallic ion that is required for a protein's biological activity to happen, acting as an enzyme helper.

Coenzyme

An organic cofactor.

Flavine Adenine Dinucleotide

A cofactor involved in various metabolic processes, essential in energy production from nutrients.