Researchers are studying lichens growing on trees in a forest ecosystem. At the beginning of the study, the researchers identified twelve lichen species in the forest. Later, a forest fire happened in the study area. The researchers returned to the area and found only six lichen species. What inference is best supported from the researchers observations?

They can infere that the surviving six lichen species are either genetically adapted to be fire resistant, or they recover very fast from an inferno situation. Whereas the other six that were wiped out were not adapted for these situations.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.