Which of the following factors does NOT influence an ecosystem's abiotic components?

The correct choice is based on the understanding that abiotic components of an ecosystem refer to the non-living physical and chemical factors that influence the environment and the organisms that inhabit it. These include elements such as humidity, temperature, and salinity, which play significant roles in determining the conditions of an ecosystem.

Humidity affects water availability and how organisms interact with their environment, temperature influences metabolic rates and seasonal behaviors, and salinity impacts the types of organisms that can thrive in aquatic environments. These are all direct physical or chemical aspects of the environment.

On the other hand, species interaction involves the relationships and interactions between different living organisms within an ecosystem, such as predation, competition, and symbiosis. This aspect pertains to the biotic components of an ecosystem and does not pertain to the abiotic factors. Therefore, it is correct to state that species interaction does not influence the abiotic components, as it deals exclusively with living organisms and their interactions.