What are advantages and disadvantages of the greenhouse effect?

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above