The factor most likely to result in a decrease in the size of a specific population is

The factor most likely to result in a decrease in the size of a specific population is Famine.

Famine can causes shortage of water and food that can vanish a huge population from the earth.  

A famine can be a result of inflation, extreme weather, conditions and imbalance, war, and crop failure or government policies. A famine at a certain area can cause starvation, deprivation, high mortality rate and disease wide spread.  

glycolysis is a process that fuel your metabolism. it is apart of cellular respiration the process that produce atp.

idk im sorry.