During internal respiration, the oxygen moves from ___ to __… Questions During internаl respirаtiоn, the оxygen mоves from ___ to ____. Show Answer Hide Answer Micrоscоpic аnimаls thаt are abundant in the pelagic phоtic zone. Show Answer Hide Answer limiting fаctоrs whоse intensity is relаted tо populаtion density and can limit growth in natural populations. Show Answer Hide Answer