Could you help me witht parts B and C$.$

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TableOne is a $317$x$3$ matrix and consists of the following columns:

Col $1$ Year from $1988$ to $2019$

Col $2$ Ocean pH for the years in Col $1.$

Col $3$ Ocean CO$2$ for the years in Col $1$

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TableTwo is $9977$x$2$ matrix and consists of the following columns:

Col $1$ Year from $1976$ to $2020$

Col $2$ Atmospheric CO$2($in ppm$)$ for the years in Col $1$