Bordeaux mixture was first used in:

Which one of the following organisms is used as an indicator of water quality?

Identify the correct statements from the following:
$(A)$ Microbes have been used for centuries.
$(B)$ Not all microbes are pathogenic.
$(C)$ There are various methods to culture microbes in a nutrient medium.
$(D)$ Fungi,Cycas,viruses,and bacteria are examples of microbes.

The term "antibiotic" was coined by

$A$ scientist associated with the discovery of the first 'antibiotic' is

Penicillin was discovered while observing the inhibition of growth of which organism?