The first time a pathogen hits, our bodies do not know how to handle it properly. This means that our bodies take more time to handle it the first time around. The second time around, however, our bodies have altered so that they can handle the pathogen more efficiently. Hope this helps!
A. Microorganisms can have both positive and negative effects on other organisms
Microbes or pathogens
variety of bacteria, viruses, and parasites<span>.</span>
Nope...........................
C is what i guess the answer would be
