Bordeaux mixture was first used in:

Through the extensive knowledge of which of the following, are microorganisms used in various ways for human welfare?

What does $Rauwolfia$ $vomitoria$ produce?

Consider the following statements $(A-D)$ about organic farming.
$(A)$ Utilizes genetically modified crops like Bt cotton
$(B)$ Uses only naturally produced inputs like compost
$(C)$ Does not use pesticides and urea
$(D)$ Produces vegetables rich in vitamins and minerals
Which of the above statements are correct?

Who was the first discoverer of the antibiotic penicillin?

Who was the first discoverer of antibiotics?