The same way humans do:
By breathing in oxygen and then it goes into the system and filters through and they get CO2 as a waste product just like us!
Not to be mean but it’s kind bad and good but u said be honest basically so I did bye have a nice day
If oxygen is present, then glucose can be broken all the way down into carbon dioxide and water. This process is called aerobic respiration because it requires air (oxygen). In the absence of oxygen, the cell uses a process called anaerobic fermentation. or simply fermentation.
Answer: Under these conditions, water osmosis causes water to accumulate in the cell from the external environment. The contractile vacuole acts as part of a protective mechanism that prevents the cell from absorbing too much water and possibly lysing (rupturing) through excessive internal pressure.
A search method employed by two or more people overlapping separate line searches forming a grid.
Not to sure tho hope this helps