The Rate of Cratering in the Lunar Highlands Shows Us

question 118

Multiple Choice

The rate of cratering in the lunar highlands shows us that

• A) the largest impacts are the youngest, such as Copernicus and Tycho.
• B) most of the asteroids must have hit the Moon, not the Earth.
• C) they must be younger than the older, darker mare.
• D) the oldest rocks are at least as old as the mare, but some craters are much younger.
• E) they range from 4.6 - 4.4 billion years old, on average.

---

Definitions:

Total Cost

The sum of all costs incurred by a firm in producing a certain level of output.

Monopolistically Competitive

Describes a market structure where many companies sell products that are similar but not identical, allowing for significant competition but with some degree of pricing power.

Total Revenue

The overall amount of money earned by a firm from the sale of its goods and services, before any costs are deducted.

Total Cost

The overall costs spent in the generation of goods or services, encapsulating both non-variable and variable expenses.