• Bacteria and humans have many important relationships.
  • Bacteria make our lives easier in a number of ways.
  • On the other hand, bacteria can also make us sick.
  • There are billions of bacteria inside the human intestines.
  • They help digest food, make vitamins, and play other important roles.
  • Humans also use bacteria in many other ways, including:Creating products, such as ethanol and enzymes.Making drugs, such.
  • as antibiotics and vaccines.
  • Bacterial infections in people can be treated with antibiotic drugs.
  • Some strains of bacteria are now resistant to most common antibiotics.
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