4) Explain two places in nature where bacteria are found on a human body.
1) Skin: The human skin is one of the most common places where bacteria naturally exist. Our skin is home to a diverse community of bacteria, fungi, and other microbes, collectively known as the skin microbiome. These microorganisms help to protect our body from harmful pathogens, regulate moisture levels, and aid in immune system function. Examples of bacteria present on the skin include Staphylococcus epidermidis, Corynebacterium, and Propionibacterium acnes.
2) Gut: The human gastrointestinal tract or gut is another significant location where bacteria are found in the human body. The gut microbiome consists of trillions of microbes, including bacteria, fungi, viruses, and protozoa, that live in our intestines and help with a variety of functions, such as digestion, nutrient absorption, and immune system regulation. Some common bacteria that reside in the gut include Bacteroides, Lactobacillus, and Bifidobacterium.
Other places where bacteria naturally reside in the human body include the mouth, nose, respiratory tract, and urogenital system.