Portals of entry are the sites where micro-organisms can enter a host and reproduce, causing diseases or infections. There are various portals of entry in the human body. This can include the skin, our mucous membranes, and even our respiratory and gastrointestinal tracts. Portals of exit are where these micro-organisms leave and spread to other individuals. Portals of exit include coughing, sneezing, and some of our bodily fluids.
C, when mutations are not always predictable they are random
I don't belev there will b another planet.....they took Pluto off cause it was too small to b co side red as a planet as there r lots of other stars or whatevr that size...I cud b wrong in this idk
Answer:
Trace minerals are those minerals which we need in lesser amount for our body which includes iron, copper, zinc, cobalt, selenium etc.
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