Can we prove evolution? how do organisms change? salvidor luria asked whether bacteria evolve like other organisms. do darwinian principles apply to bacteria; or are they more subject to environment? using a brilliant experimental design involving virus resistance in bacteria he was able to clearly demonstrate what phenomenon?

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.

Where are the following choices