The Oldest Rocks on the Moon Were Formed About How

question 15

Multiple Choice

The oldest rocks on the Moon were formed about how many years ago?

• A) 1.5 million
• B) 4.4 million
• C) 1.5 billion
• D) 4.4 billion

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Definitions:

Output

The overall output of products or services from a business, industry, or national economy.

ATC Curve

Refers to the Average Total Cost curve in economics, which depicts how the total costs per unit of output change as the level of production is altered.

MC

The additional cost incurred by producing one more unit of a product or service, commonly known as marginal cost.

ATC

Stands for Air Traffic Control, a service provided to direct aircraft safely in the sky and on the ground.