1. Explain how you determined the age of the intruding rock on table C. 2. What information does the mass spectrometer provide?

3. In table E, how did you determine the identity of the unknown fossil?

Compare the quantity in column a with the quantity in column b. pa p a is tangent to the circle at a. column a column b ap a p ax a x question 4 options: the two quantities are equal. the quantity in column a is greater. the relationship cannot be determined from the information given. the quantity in column b is greater.