Species are characterized by interbreeding between members of the group and by the absence of breeding with other groups.
I’m not sure what level science this is but I believe the answer is (b) the person was sick from a virus and developed innate immunity
Lactic acid fermentation is the by-product of B. Anaerobic glycolysis. When oxygen is not readily available, organisms such as humans switch from aerobic respiration to lactic acid fermentation which is an anaerobic process that produces two ATP for every glucose molecule broken down in the glycolytic pathway.
Answer:
This really was helpful I learn a lot which is meaningful