A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.
B. The amount of waste would build up and the toxins produced would harm the animals and humans
Wait what’s a water table then I can annswer
The answer is Observation. That's the first step.