Final answer:
Staphylococcus is present in various environments and has developed antibiotic resistance, making its control difficult. Chemical environments created by the skin and mucous membranes inhibit bacterial growth and break down bacterial cell walls.
Step-by-step explanation:
Control of Staphylococcus is made difficult because it is present in environments such as contaminated plates left in a 35 °C incubator, yogurt cultured at room temperature, a salt pond in the desert with a daytime temperature of 34 °C, and in all microorganisms in a certain region of the human body. Staphylococcus aureus is also known to have developed resistance to antibiotics, making it more challenging to treat infections caused by this bacterium. Additionally, the chemical environments created by the skin and mucous membranes, such as acidity and presence of enzymes, prevent bacterial growth and break down bacterial cell walls, respectively.