In 1650, an individual calculated that the earth was about 6,000 years old.

What has happened to scientists’ estimates of the earth’s age since then?

Responses

Scientists now think the earth is much older.
Scientists now think the earth is much older.

Scientists now think the earth is much younger.
Scientists now think the earth is much younger.

Scientist now are less sure about the earth’s age.
Scientist now are less sure about the earth’s age.

Scientists agree with the estimate from 1650.

Scientists now think the earth is much older.