Give any animal the ability to photosynthesize. Now animals are of course complex creatures that need a variety of nutrients to function properly, and the number of chemicals we’ve seen be able to be photosynthesized is low, but imagine only needing to nude sunbathe for like a half hour to get enough sugars to fulfill your caloric intake, including the less efficient carb->protein/carb->fat conversion and pop a pill for some vitamins. Imagine if all animals had that as a baseline and just needed to hunt/forage for nutrients and vitamins to support auxillary functions.
Overpopulation would be nearly impossible despite massive population booms, with the only real limitation being physical space and the social dynamics of any given species or interspecies interactions.
The first violent Zionist settlers started migrating in the late 1800s, not the 20th century, this is more Zionist propaganda that leaves out the early terror in Palestine that foreshadowed the rest of the conflict. These early terror groups were mostly ineffective, but their eventual dissolution lead to Zionist thought spreading to what are now the top supporters and financiers of Israel. the rest of the comment is spot on though.