Indicate at least three groups of bacteria that differ in the type of nutrition.

1) Saprophytes feed on organic matter of dead bodies of animals and plants, or their secretions. For example, lactic acid, rotting.
2) Parasites feed on organic matter of living organisms. For example, disease-causing.
3) Chemotrophs use the energy of redox reactions. For example, sulfur bacteria.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.