C looked it up on google yw
Answer:
Physical
Explanation:
The skin is a physical barrier.
Mechanical barriers are made by mucous membranes
Even if a microorganism is a part of the normal microbiota of a human being, it may cause the death of the person. For example, say E. coli, it resides in intestines and is harmful. But, if its number increases way too large, it may cause infection (Colitis) and even death. So, even the normal microflora needs to be present in the controlled quantities, inside the body.
No because if we we're burning calories it would mean that we were physically burning
Answer:
I think it's 10% sorry if i'm wrong
Explanation:
