Héroes Marvel nº19 El Hombre de Hierro y Dan Defensor

from Adventures Into Weird Worlds (Marvel, 1952 series) #2 (February 1952) [retitled from When a World Goes Mad!]

In the future, Earth is overpopulated, and even the very rich must work an hour on a farm each week to produce enough food. A rich man leaves Earth and finds a sparsely-populated and fertile planet to live on. He discovers that the plants are actually predatory, and that the few peaceful inhabitants are so short of food that he must work eight hours a day to feed himself.