Odd man out a) bio alcohol, green diesel, bio ethers, petroleum b) cholera, typhoid, scabies, dysentery
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Solution
a. Petroleum is the odd one as it is fossil fuel while rests are biofuels. Fossil fuel is nonbiological origin and biofuel is biological origin. b. Scabies is the odd one as rest three are water-borne diseases. Scabies is a mite-borne disease that is contagious, spread by contact.