Which of the following best defines an abiotic factor?

An abiotic factor is best defined as a nonliving factor in an ecosystem. This includes elements such as sunlight, temperature, soil, water, and minerals that influence the environment and the living organisms within it. These factors are crucial because they help shape the habitat and determine the types of organisms that can thrive in a particular ecosystem. Understanding abiotic factors is essential for comprehending ecological relationships and how changes in these conditions can impact the overall health of ecosystems.

The other options refer to living components or specific ecological issues, which do not align with the definition of abiotic factors. For instance, living organisms are biotic factors, while climate change and invasive species are more specific concepts that involve interactions and impacts rather than defining the nonliving aspects of an ecosystem.