ritish economist Thomas Robert Malthus aided Darwin in creating the theory of natural selection. Malthus proposed how human populations remain in balance. He debated that any increase in the availability of food for basic human survival could not equal the geometrical rate of population growth. In addition, limitations such as famine, disease, or war, play a major role in deciding the population growth. With this proposal, Darwin quickly applied Malthus's proposal in circumstances of plants and animals. In 1838, Darwin designed a projection of a theory of evolution through natural selection.
             Natural selection is a process in which the organisms suited best for their environment tend to reproduce the most and leave the most descendents. With the limitation of food for each species, competition is formed in which all livings beings must compete for the supply of food, water, space, and other resources. Individual plants and animals whose adaptations of suited best for a certain environment tend to have an advantage in the competition for surviva
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