Which Gas Began to Increase in the Atmosphere as a Result

question 1

Multiple Choice

Which gas began to increase in the atmosphere as a result of photosynthesis by autotrophic prokaryotes approximately 2.7 billion years ago?

• A)methane
• B)carbon dioxide
• C)oxygen
• D)hydrogen

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Definitions:

Systematic Risk

The risk inherent to the entire market or market segment, also known as market risk, which cannot be mitigated through diversification.

Expected Return

An estimate of the various amounts of money that one could potentially gain or lose from an investment.

Beta

A measure of a stock's volatility in relation to the overall market; a measure of systematic risk.

Standard Deviation

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