Use the worked example above to help you solve this problem.

$($a$)$ Estimate the fractional change in the volume of Earth's oceans due to an average temperature change of $3$C$.$ Note that

$$water $=2\mathrm{.}07104($C$)-1.$

$$VV$0$

$=$

$($b$)$ Use the fact that the average depth of the ocean is $4\mathrm{.}00103$ m to estimate the change in depth.

m