Just take this scenario. How can underwater creature found in caverns deep in the earth survive with lack of oxygen if the water source don't contain enough dissolved oxygen to survive on?
Fascinating point. Very important information.
Depends on what you are calling a creature.
Aerobic (+ O2) and Anaerobic (- O2) conditions exist, and "creatures" thrive in both of these conditions. They are adapted to it.
Trying to solve all of natures mysteries is a great motivator for us humans. Mistakes happen all the time, but that is to be expected.
We will never figure it all out, and that is where Humility comes in to play
Keep moving forward!
