It has a lot of advantages as well as disadvantages; but they prevent or suppress the entry of pathogens; colonies produced by some organisms of normal flora have a harmful effect on the pathogens; endotoxins liberated by normal flora may help the defense mechanism of the body. (Make me the brainless please)
I think it is change to the phenotype of the organism
Because the heart don't have the nerves to fell stressed, the most reliable organ to measure stress would be the brain. hope this helps
A. He wouldn’t want his new peanut plants to have butter peanuts