Bacteria

Bacteria are single-celled microorganisms that can live in diverse environments, including soil, water, air, and inside other organisms.
Bacteria can be beneficial, like those used in fermentation, nitrogen fixation, and sewage treatment, or harmful, causing diseases like tuberculosis, cholera, and food poisoning.
They reproduce primarily by binary fission, a process where one cell divides into two identical cells.
Bacteria are microscopic but extremely important in medicine, agriculture, environmental management, and biotechnology.
Bacteria play a vital role in nutrient recycling, breaking down organic matter, and maintaining ecological balance.