Dose Response Complexities
Most chemicals show a classic dose response curve – at an
occasional dose (below a threshold), no impact is determined. Some show a
development called enough challenge – a little exposure produces animals that
"grow quicker, have higher general look and coat quality, have fewer tumors, and live longer
than the management animals". A couple of chemicals don't have any well-defined
safe level of exposure. These area unit treated with special care. Some
chemicals area unit subject to bio accumulation as they're hold on in instead
of being excreted from the body; these additionally receive special thought.