In the Drake Equation (Number of Civilizations = NHP ×

question 11

Multiple Choice

In the Drake equation (Number of Civilizations = NHP × ( f ) life × fcᵢᵥ × fnₒw) ,we expect the term fcᵢᵥ to be small if

• A)most civilizations destroy themselves within just a few hundred years of arising.
• B)most of the civilizations that have ever existed are still out and about in the galaxy.
• C)primitive life is common but intelligent life is rare.
• D)most habitable planets never actually get life on them.

---

Definitions:

Accrued Interest

Interest that has been earned but not yet paid or received.

Principal

The original sum of money borrowed in a loan, or the original amount invested, excluding any interest or dividends.

Borrowed

The act of receiving something with the intention of returning it or its equivalent, usually referring to money with the implication of interest.

Payment

The transfer of money or goods in exchange for a product or service.