What are the main organic compounds of protoplasm?

compounds OF protoplasm- water,salt

What are the main inorganic and organic pollutants present in water ?

Decreasing order organic compound in protoplasm is

Decreasing order organic compound in protoplasm is

What are heterocyclic organic compounds ? Explain with examples.

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is