what is the list of things? food handlers usually have to wear hairnets, gloves and wash their hands often to prevent cross contamination and the spread of bacteria.
Do you mean "the- people"?
Gause's Competitive Exclusion Principle
The 'competitive exclusion principle' (CEP) states that two species with identical niches cannot coexist indefinitely. ... Gause helped propel ecology by his approach of experimentally testing mathematical models, and his unifying the concept of the niche with resource competition.
The answer is C) Ecological niches become available for organisms to evolve into by adaptive radiation
