Answer:
Whereas both bacteria and archaea lack a nuclear envelope and membrane-bound organelles, archaea and eukaryotes have similarities beyond those seen between bacteria and eukaryotic cells. Bacteria have the macromolecule peptidoglycan in their cell walls; archaea and eukarya lack this polymer.
Explanation:
Mutualism is where both animal help each other to benefit form each other. Win-Win . Commensalism is where nothing happen neither animal benefits from it .
I believe it's lactic acid and energy.
For me i’ll say the answer is A bit i might be wrong so do what’s best for you
B . Excessive commercial fishing
Reason: the other options are good things this is the only bad thing
