The answer is amino acid.
Stagnate?? i didn't think that's it
Aerobic and anaerobic just refers to the presence/absence of Oxygen.
The main difference between them is that
aerobic Metabolism happens in the presence of Oxygen whereas Anaerobic happens in the absence of Oxygen
Biodiversity plays an important role inecological health as much as it does for human health. ... Ecosystem engineers aredefined as: "...organisms that directly or indirectly modulate the availability