Aerobic systems and anaerobic systems are both part of the cellular respatory system.
aerobic systems is your body creating ATP same with anaerobic systems, but the difference is it doesn't require oxygen.
If your body uses ATP in the process of photosynthesis which creates glucose aka nutrients both aerobic and anaerobic systems create ATP for photosynthesis.
Answer:
Sources of freshwater: rivers, lakes, reservoirs, and creeks and streams.
