Final answer:
Bacteria can exist in virtually any environment, including soil, water, air, and the human body. They are extremely resilient and adaptable, able to survive in extreme conditions. In food, bacteria can form biofilms and cause foodborne diseases.
Step-by-step explanation:
Bacteria can exist almost anywhere. They are the most numerous species on the planet and can live and grow in practically any environment. Bacteria can be found in soil, water, air, and even on and within the human body. They are extremely resilient and adaptable, able to survive in extreme conditions such as hot springs, the Antarctic ice shield, and two miles under water. Bacteria are also commonly found in food, where they can form biofilms and cause foodborne diseases.