Autotrophs remove from the air and fix this into tissues providing for secondary consumers.

Autotrophs remove CARBON DIOXIDE from the air and fix this into tissues providing OXYGEN for secondary consumers. 

Autotrophs are self-producing organisms that are found within the environment. These are plants that can sustain their lives through the process of synthesis. Without these producers, life on earth would cease to exist.

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.