What can lead to competition in a population?

Competition in a population can arise from limited resources such as food, water, shelter, and mates, prompting individuals to vie for survival and reproduction. Environmental factors, including habitat destruction and climate change, can exacerbate resource scarcity. Additionally, high population densities can intensify competition as individuals are forced to share the same ecological niche. This struggle can drive natural selection, influencing evolutionary adaptations within the population.