31.3% of all S. aureus isolates collected during the study period were resistant to mupirocin
Answer:
It shows which consumes which. A basic food chain.
Explanation:
Wherever the arrowhead is pointed at, shows that it consumes the specie next to the nock. For example, the arrow on the left has its arrowhead directed at the butterfly. This means that the butterfly consumes the flower. The next arrowhead points at the bird, which means that this bird consumes the butterfly.