University of Central Florida (UCF) BSC2010C Biology I Practice Exam 4

In ecological terms, abiotic factors refer to the non-living components of an environment that influence the ecosystem and the organisms within it. These factors are crucial for shaping the habitat and the biological interactions within an ecological niche.

Temperature is a primary abiotic factor that affects metabolic rates, reproductive cycles, and the distribution of species. Water availability, also an abiotic factor, plays a significant role in the survival and thriving of organisms since all life forms require water in some form. Soil composition directly influences the type of vegetation that can grow in an area, another essential abiotic element.

In contrast, competition with other species is a biotic factor, as it involves interactions among living organisms. Biotic factors encompass all living components of an ecosystem, including species interactions like competition, predation, and symbiosis. Thus, the presence of interspecies rivalry does not fit into the category of abiotic factors, making it the correct choice in this context.