Chapter 14, Problem 14.28PAE

(a)

Interpretation Introduction

To determine:

Why coal is $C$ -depleted.

(b)

Interpretation Introduction

To determine:

How the increase in $C$ -depleted $C{O}_2$ affect the date of a very old object in which its $\raisebox{1ex}{$C$}\!\left/ \!\raisebox{-1ex}{$C$}\right.$ ratio was compared with the 20^th-century ratio.