Explanation:
Darwin noticed the conflict between resources of population and its continued reproductive pressure. Darwin considered that like in humans, completion exists among all living things. Thus Darwin was much influenced by Malthus theory of human population growth or Malthus idea of population. Thomas Robert Malthus written a book. An Essay on the principles of population. He was a British economist, put forward a theory of human population growth
(1) He stated that population grows geometrically
(2) When the imbalance reaches a certain value, some factors like hunger, epidemics, foods, earthquakes, was etc will bring the population to a desired level. Such a population, these factors were called positive checks' by Malthus.