Question

Please solve Q16,18and20

Answer 1

Step-by-step explanation:

please complete ur question .otherwise no one can answer

Answer 2

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Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats