sentences: if something has a positive impact on an organism 's growth then that something increases the population of that organism
docs: positive is film. evolution has effect_of_creating_new_species biological_growth_of_organisms is biological_growth. joy is positive_stimulus. growth is illness. population_growth is increase. positive_outcome_of_undertaking is success. biological_growth_of_organisms is becoming. positive_stimulus is stimulation. positiveness is amount.