The Craters on Mercury Are About __________ Years Old

question 45

Multiple Choice

The craters on Mercury are about __________ years old.

• A) 4 thousand
• B) 4 million
• C) 4 billion
• D) 4 trillion

---

Definitions:

Supplied

The quantity of a good or service that producers are willing and able to sell at a given price.

Closed Economy

A financial structure that doesn't engage with external economies through trade, investment, or the movement of people.

Public Saving

The difference between the tax revenues and government spending of a country, representing the government's surplus or deficit.

National Saving

The total saving of an economy, consisting of both private and public saving.