The Increase in Atmospheric Oxygen During the Proterozoic Was Most

question 25

Multiple Choice

The increase in atmospheric oxygen during the Proterozoic was most related to the ____.

• A)decrease in global volcanism
• B)decrease in ocean sizes
• C)process of photosynthesis by bacteria
• D)appearance of land plants
• E)origin of complex life forms

---

Definitions:

Alpha Emissions

A type of radioactive decay where an alpha particle, consisting of two protons and two neutrons, is emitted from the nucleus of an atom, reducing its mass and changing its atomic structure.

Negative Externality

A cost that affects a party who did not choose to incur that cost, commonly associated with production or consumption of goods and services.

Government Agency

A government agency is an organization operated by the government to enforce laws, oversee activities, and provide services in a specific area.

Pollution Tax

a tax imposed on the emission of pollutants, intended to provide an economic incentive for businesses and individuals to reduce their environmental impact.