The cells that produce hair made of protein contain a lot of , while the cells that produce the oils that coat the hair contain a lot of .

Why do you think water is so important to living things

Microorganisms are involved in each of the following processes excepta. smog production.b. food production.c. infection.d. o2 production.e. decomposition of organic material.

Explain why phospholipid molecules form a bilayer. (3 marks)