Goneril, Regan and Cordelia 'compete' for the land

Old becomes Lear's identity

"pray, do not mock me: I am a very foolish fond old man"

"I gave you all - "

"and in good time you gave it"

inevitable situation, young will recieve what the old can no longer hold on to, in terms of 'survival of the fittest' and the strong defeating the weak, they will over ride the old before it naturally happens - tigers kill their fathers if they do not leave before it happens "tigers not daughters" -  the evolutionary approach highlights the inevitability that happens amongst animals, and amongst humans too.

Survival of the fittest: Goneril is so disgusted by her husbands weakness that she tries to persuade Edmund to kill him, although not young V old, it is all part of her journey to gain the most power

Gloucester’s use of the word ‘natural’ has a deliberately
ambiguous meaning, as it can be taken either as his recognition of
Edmund’s newfound legitimacy, or as his mistaken belief in his son’s bonds of
natural affection for him. This causes Edmund to want to over throw his father as there is no bond between them.