The competitive exclusion principle states that a) two species cannot coexist in the same habitat. b) competition between two species always causes extinction or emigration of one species. c) competition in a population promotes survival of the best-adapted individuals. d) two species with the exact same niche cannot coexist in a community. e) species that compete usually coevolve.

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.