The oldest rocks that have been dated by radioactivity are approximately

A. 4 billion years old.
B. 2 million years old.
C. 200 million years old.
D. 10 billion years old.


Answer: A

Environmental & Atmospheric Sciences

You might also like to view...

Which of the following pairs of events appear to be linked?

A. increased atmospheric carbon dioxide and low pH in the ocean B. increased atmospheric carbon dioxide and increased temperature of Earth C. melting glaciers and increased sea level D. All of these statements show logical linkage.

Environmental & Atmospheric Sciences

A ________ is an advancing boundary where cold air overtakes and replaces warm air

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

If the amount of radioactive element is 1/8 of the amount originally present, how many half-lives have gone by? Please show your work

What will be an ideal response?

Environmental & Atmospheric Sciences

Which mineral property is associated with breaking on planes?

A. crystal form B. hardness C. cleavage

Environmental & Atmospheric Sciences