The excretions of living organisms are best categorized as which type of factor in an environment? biotic abiotic living nonliving

The excretion of living organisms are best categorized as BIOTIC FACTORS.

All the components of an ecosystem are usually divided into two major classes, which are the biotic and abiotic components. The biotic components refers to the living organisms in the ecosystem while the abiotic components refer to the non living components of the ecosystem; examples of these include: sunlight, water, temperature, relative humidity, etc. The biotic and the abiotic components of the ecosystem interact together to form a stable environment.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.