Which of the following best illustrates an abiotic factor in an ecosystem?

The amount of rainfall received in a region is a clear example of an abiotic factor because it refers to the non-living components of an ecosystem that influence the environment and the living organisms within it. Abiotic factors encompass elements such as climate, temperature, sunlight, soil composition, and water availability. Rainfall is crucial as it directly affects the availability of water, which is vital for all forms of life, influencing species distribution, plant growth, and overall ecosystem health. Understanding the role of abiotic factors, such as rainfall, helps ecologists comprehend how ecosystems function and respond to changes in the environment.

In contrast, the variety of plant species, the presence of herbivores, and genetic diversity pertain to biotic factors, which involve living organisms and their interactions. These living factors are shaped by the abiotic conditions in which they exist, highlighting the interconnectedness of biotic and abiotic elements in an ecosystem.