The carbon, oxygen, hydrogen and nitrogen are the key elements in aminoacids as all aminoacids contain amine (NH2) and carboxyl (COOH) as functional groups and R group for every specific aminoacid.
Name the man who in the 1930s raised a volunteer corps of about 100,000 pathans, known as 'Khudai Khidmatgars' or Servants of God and affiliated it to the Congress?