$A$ chemical substance produced by a microorganism for inhibiting the growth of another is

Fresh meat is putrefied by

Identify the correct statements with respect to antibiotics:
$(i)$ Fleming,Chain,and Florey were awarded the Nobel Prize in $1945$.
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases.
$(iii)$ Penicillin was used to treat American soldiers wounded in World War $I$.

What is the meaning of the term 'antibiotic' for humans and microbes,respectively?

The term $LABS$ abbreviates as:

The water of the holy Ganga river is considered pure due to the presence of: