Earth Is Approximately How Old

question 42

Multiple Choice

Earth is approximately how old?

• A)14 billion years
• B)4.54 billion years
• C)40 million years
• D)6,000 years

---

Definitions:

Second-Level Domain

A domain that’s directly below a top-level domain.

Instant Messaging

A form of real-time communication between two or more people based on typed text, images, video, or voice over the Internet.

Internet Cache

A section of the hard drive that stores information that may be needed again, such as Internet protocol addresses and frequently accessed web pages.

Private-Key

A type of encryption key used in asymmetric cryptography, kept secret by the owner, and used for decrypting messages or creating digital signatures.