The table below lists different regions in the world arranged in order from the warmest to the coldest, along with the average body mass of adult gray wolves found in each region:
ClimateLocationAverage mass of a gray wolf (kg)warmestArabian Peninsula19\cline2−3↓Southern Europe28\cline2−3Central Europe39\cline2−3Northern Canada48\cline2−3coldestAlaska54\begin{array}{|c|l|c|} \hline \textbf{Climate} & \textbf{Location} & \textbf{Average mass of a gray wolf (kg)} \\ \hline \text{warmest} & \text{Arabian Peninsula} & 19 \\ \cline{2-3} \downarrow & \text{Southern Europe} & 28 \\ \cline{2-3} & \text{Central Europe} & 39 \\ \cline{2-3} & \text{Northern Canada} & 48 \\ \cline{2-3} \text{coldest} & \text{Alaska} & 54 \\ \hline \end{array}Climatewarmest\cline2−3↓\cline2−3\cline2−3\cline2−3coldestLocationArabian PeninsulaSouthern EuropeCentral EuropeNorthern CanadaAlaskaAverage mass of a gray wolf (kg)1928394854Use your understanding of natural selection to suggest why the gray wolves in Alaska have the largest average mass.