I believe that the best answer among the choices provided by the question is are the following :
<span> H2O2
H2O
</span><span>catalase</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Answer:
immunobiology cause infections and diseases
Lipids? I think? Don't trust me on this one. That's my guess.
B they have similar DNA sequences