Answer:
If I where to guess I would say b and c.
sorry if its not correct
Explanation:
They use evidences. Hope it helps
Answer:
Normal flora are helpful when they are within tissues
Explanation:
Normal flora are organisms that are naturally found especially within tissues they include bacteria which are natural flora of such habitat
Answer:
wdym?
Explanation:
what do you mean what is not a big deal you should learn everything in biology if that's what you're asking