Question

Earth's age is ________ billion years old?

1) .046
2) .46
3) 46
4) 460
5) 4.6

Answer 1

The age of Earth is 4.543 billion years old, based on scientific estimates using dating techniques. Geologists use abbreviations like Ma and Ga to represent different lengths of time.

Step-by-step explanation:

The age of Earth is 4.543 billion years old according to scientific estimates. This number is based on dating techniques that analyze the oldest rocks found on Earth and the age of the solar system. Geologists use various abbreviations to represent different lengths of time, such as Ma for millions of years and Ga for billions of years.