An<unk> , ecological<unk>  or eco<unk>  is any<unk> , abiotic or biotic, that influences living organisms. Abiotic<unk> s include ambient temperature, amount of sunlight, and pH of the water soil in which an organism lives. Biotic<unk> s would include the availability of food organisms and the presence of biological specificity, competitors, predators, and parasites.
Environmental factor
Environmental disease
Host factor
Medication
Food contaminant
Dietary supplement
Pesticide residue
Drug 