The two function are Protection, Contains sensory receptors, production of vitamin D, regulation of body temperature I got only that
Answer: it’s is proteins that are conjugated with a small number of monosaccharides or short typically branched chains of carbohydrates ( oligosaccharides). And one use of glycoproteins is they have something to do with immune system examples the molecules of as such as antibodies ( immunoglobulins) which they just interact with antigens.
Explanation: hope this help I take biology it can be tough.
The high density helps a paper clip to float on the water because the paper clip's density is less than that of the water.