What Is the Main Reason Why Atmospheric Oxygen Levels Did

question 2

Multiple Choice

What is the main reason why atmospheric oxygen levels did not rise immediately after the mass production of the gas by photosynthetic bacteria?

• A) Because oxygen was rapidly consumed by aerobic microorganisms.
• B) Because oxygen was dissolved in water.
• C) Because large amounts of ferrous ions reduced the oxygen molecules.
• D) Because oxygen was rapidly recycled by early photosynthetic bacteria.

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Interest Expense

The cost incurred by an entity for borrowing funds, typically reflected in the profit and loss statement.

Cash Coverage

A ratio that measures a company's ability to meet its interest obligations with its operating cash flow, providing insight into financial stability.

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A metric that measures the relationship between a company's stock price and its per-share earnings, providing insight into the market's valuation of the company.

Earnings Per Share

A company's profit divided by the number of outstanding shares of its common stock, indicating the company's profitability on a per-share basis.