About 10% (or more) of us carry stapylococcus aureus on our skin as part of our normal flora. upon wounding, these bacteria can
invade the bloodstream and lead to a variety of diseases. this is one example of an opportunistic infection. if you are one of the 10% affected and have no disease symptoms at this time, then this symbiosis is categorized as a ________.
The presence of stapylococcus aureus in skin as normal flora doesn't give the human host any benefit, while stapylococcus aureus could find food on the human skin. Since only one side has got the profit, the symbiosis would be called commensalistic symbiosis. It was different for the normal flora inside the intestine because the host got some benefit, thus it was mutualistic symbiosis.
Only a little amount of energy as 10% is transferred to the next trophic level. This is called 10% rule. So, in this case as the energy available at the secondary trophic level is 50 kilocalories and 10% of it is transferred into the tertiary level so it would be 5 kilocalories.
