2. The table shows several animals that live in or below a tree. The table also shows the elevation of their dwellings, relative to ground level. Dwellings Elevation (m) Robin's nest 2.6 Groundhog burrow Red squirrel den 0.3 (a) Plot and label the elevation of each dwelling on a vertical number line. (b) Calculate the vertical distance between each pair of dwellings. Organize your results in a table.