Discuss four ways a scientist can reduce bias in scientific investigations

1) ask a second party 2) go based only on proven facts (dont let religion interfear) 3) work with people 4) record each step of a process so people see the reasoning behind decisions

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.