Fermentation enables cells to produce chemical energy from the breakdown of sugar
Answer:
well we need the photo to see what animal its asking
Explanation:
excretory system: removes waste from blood.
respiratory system: obtains oxygen so the energy in the nutrients can be extracted.
circulatory system: transports nutrients from small intestine to the othet tissues.
nervous system: regulates and controls digestive functioning.
( Am not completly sure, but i think this is the answer)