You could argue that in early succession areas species may have not been adapted or evolved. In Darwin's theory, life began in a shallow, warm pond. If that is the case, species would then venture deeper when their area they are in is suitable and having success
Start with the one that you know better the beginning of essays are hakf the tine awkward anyway.
It is Glycolysis.
a word from (Glyco from glucose), (lysis from breaking)