All the biological macromolecules contain carbon, hydrogen and oxygen. however, most do not contain nitrogen. the category that contains nitrogen are a) lipids. eliminate b) proteins. c) carbohydrates. d) unsaturated fats.

B) Proteins

Lipids and Carbohydrates only contain carbon, hydrogen, and oxygen.

Unsaturated fats are a type of monomer for lipids, meaning they as well are only made up of carbon, hydrogen, and oxygen.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high