Elevated Mesozoic Atmospheric Carbon Dioxide Was Due to a Lower

question 6

Multiple Choice

Elevated Mesozoic atmospheric carbon dioxide was due to a lower rate of mountain-building and

• A) increased solar output during that time.
• B) unfortunate errors in how we calculate global temperatures.
• C) evolution of many new types of planktonic organisms.
• D) expansion of glaciers across large areas of Earth's landmass.

---

Definitions:

Marginal Social Benefit

The additional benefit to society as a whole from producing or consuming one more unit of a good.

Public Good

A product or service that is provided without profit to all members of a society, either by the government or a private individual or organization, characterized by non-excludability and non-rivalry.

Marginal Social Cost

The total cost to society of producing an additional unit of a good or service.

Public Good

A good that is non-excludable and non-rivalrous, meaning no one can be effectively excluded from its use, and someone's use of it does not reduce its availability to others.