How Did Oxygen (O₂)get into Earth's Atmosphere

question 49

Multiple Choice

How did oxygen (O₂) get into Earth's atmosphere?

• A)It was outgassed from volcanoes.
• B)It was captured from the solar nebula.
• C)It came from chemical reactions with surface rocks.
• D)It was released by life through the process of photosynthesis.

Determine the elasticity nature (elastic, inelastic, unit elastic) of goods from given scenarios.

Analyze how changes in price affect total revenue depending on the elasticity of demand.

Understand the impact of time on the elasticity of demand for products.

Identify and differentiate between perfectly elastic, perfectly inelastic, and variably elastic demand curves.

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Definitions:

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