Organisms in an ecosystem rely on both biotic and abiotic factors for their survival and well-being. Biotic factors refer to the living components of an ecosystem, such as other organisms, while abiotic factors are the non-living elements, like temperature, sunlight, and water. These factors interact and influence each other in various ways. For example, competition is a biotic factor that occurs when organisms compete for resources like food, water, or territory. This competition can impact the population size of organisms in an ecosystem, as it may lead to a decrease in resources and potentially limit the number of individuals that can be supported. Additionally, abiotic factors like temperature and availability of water can directly affect the growth and survival of organisms. Changes in these factors can lead to fluctuations in population sizes. It's fascinating to see how the delicate balance between biotic and abiotic factors shapes the dynamics of ecosystems and the populations within them.