What Are Stromatolites

question 31

Multiple Choice

What are stromatolites?

• A) A type of continental collision.
• B) Some of the earliest forms of life.
• C) Unusual volcanic eruptions.
• D) Highly deformed continental shields.

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how spread out the values are from the average.

Standard Deviation

A statistical measure of the dispersion or spread in a set of data, indicating how much variation exists from the average.

Index Fund

A type of mutual fund or exchange-traded fund (ETF) designed to replicate the performance of a specific benchmark index.