The use of tobacco is originated in
China
America
Russia
Eastern India
(b) The use of tobacco originated in America. It was smoked by the red Indians.
If there are two pathogenic viruses, one with $DNA$ and other with $RNA$, which would mutate faster ? And Why ?
A metastatic cancerous tumour is termed ’sarcoma ' if the disorder is in
Filariasis is caused by
Full forms : $ELISA$ &$ PCR$
Which is an example of active immunity ?
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