Babies that are at a low birth weight are more likely to have health problems, while women will have difficulty delivering babies with high birth weight. Together this leads to for babies of average birth weight. a. Stabilizing selection
b. Disruptive selection

The nurse is providing immediate postprocedure care to a client who had a thoracentesis to relieve a tension pneumothorax that resulted from rib fractures. the goal is that the client will exhibit normal respiratory functioning, and the nurse provides instructions to assist the client with this goal. which client statement indicates that further instruction is needed? 1. "i will lie on the affected side for an hour." 2. "i can expect a chest x-ray exam to be done shortly." 3. "i will let you know at once if i have trouble breathing." 4. "i will notify you if i feel a crackling sensation in my chest."