What role do decomposers play in the nitrogen cycle? a) Convert free nitrogen into fixed nitrogen.
b) Convert fixed nitrogen into free nitrogen.
c) Return fixed nitrogen to the soil.
d) Return free nitrogen to the soil.

Yes he thought they should be left to chance why, because he thought that was the best thing to do

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.

C- a hypothesis or d- an observation

Then it is june the conclusion to the second sentence is just restating "if it is june then it is summer"