Which was part of aristotle’s primary biological classification system?

He first divided all living organisms in 2 groups
Animal or Plant

He then put these into subgroups
Animal subgroups: land, water, air
Plant subgroups, small medium or large

Not a very specific approach to taxonomy but it was used for well over 100 years

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.

1) noble gases2) by increasing atomic number3) noble gases