20) Which of the following is not a biochemical function of waxes? A) Energy storage for animals B) Physical protection of mammalian ears C) Waterproofing of feathers in shore birds D) Prevention of water loss by leaves E) Structural materials in beehives

Explanation:

Waxes; A second group of neutral lipids that are of very important  in physiological roles

2. Waxes are  minor components of biological systems,  

3.  They consist of a long-chain fatty acid linked through an ester oxygen to a long-chain alcohol.

4. They play many important biological functions like; Physical protection of mammalian ears, Waterproofing of feathers in shore birds, Prevention of water loss by leaves  and Structural materials in beehives.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

i think the answer is b.