ICSE Class 9: Diseases Caused by Bacteria Videos | Diseases: Cause and Control

• What is pneumonoultramicroscopicsilicovolcanoconiosis???
• One bacteria can multiply into 380 billion bacteria by the end of the day.so when any harmful bacteria gets into the body, how do they all get killed at same time.
• What do u mean by Escherichia coli.. where is it found.

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