Models always have limited parameters and constraints. Models typically simplify a complex system into variables that can be controlled.
In this case, we were trying to see what variables increased moth survival based on their color, camouflage, and predation.
What are some variables in the peppered moth simulation that were not addressed?

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.