1.
Introduction
 Definition of microorganisms
 Importance of microorganisms in our daily life
II. Types of Microorganisms
 Bacteria
 Viruses
 Fungi
 Protozoa
 Algae
III. Characteristics of Microorganisms
 Size and shape
 Reproduction
 Metabolism
 Structure
IV. Positive Effects of Microorganisms
 Decomposition
 Fermentation
 Antibiotic production
 Probiotics
 Bioremediation
V. Negative Effects of Microorganisms
 Disease-causing microorganisms
 Food spoilage
 Allergic reactions
VI. Prevention and Control of Microorganisms
 Hygiene and sanitation
 Vaccination
 Antibiotics

2.
 Preservation methods
VII. Conclusion
 Summary of key points
 The role of microorganisms in our world
 The importance of understanding microorganisms