According to Current Science, Why Didn't Oxygen Begin to Accumulate

question 24

Multiple Choice

According to current science, why didn't oxygen begin to accumulate in the atmosphere for more than a billion years after life appeared on the Earth?

• A)Oxygen was removed from the atmosphere by dissolving in the ocean as quickly as it was released by life.
• B)Early life did not release oxygen, and oxygen releasing organisms didn't evolve for a billion years after the earliest life.
• C)Oxygen was removed from the atmosphere by chemical reactions with surface rocks as quickly as it was released by life.
• D)Early forms of animal life consumed the oxygen released by plants during the first billion years of life on Earth.

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Definitions:

Short-term Pricing

Pricing strategies focused on immediate objectives rather than long-term goals, such as clearing out inventory or entering a new market.

Absorption Costing

An accounting method that includes all manufacturing costs (direct materials, direct labor, and both variable and fixed overhead) in the cost of a product.

Fixed Costs

Costs that do not change with the level of goods or services produced in the short term.

Short Run

A period in economics where at least one factor of production is fixed, limiting the firm's ability to adjust to changes in market demand.