RESEARCH The only remaining fossils of Megalodon sharks are their teeth and verte-
brae. Determine which fossilization process
created these amazing fossils. Conduct
research about the biology of Megalodon
sharks and determine why other parts of their
bodies never turned into fossils.

Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.