Which one of the following statements regarding the impact of physical activity on mental health is most accurate? a. physical activity is shown to reduce distress and anxiety. b. physical activity improves self-esteem in children and adolescents. c. the effects of physical activity are more apparent for those who get nine hours of sleep each night. d. physical activity lowers the risk of depression and cognitive decline in adults.

A5-year-old boy suddenly begins coughing while eating peanuts. he is choking and gagging. when he is brought to the ed, but he is awake and is able to give his name. on physical examination, his vital signs are stable. on examination of the chest, inspiratory stridor and intercostal and suprasternal retractions are apparent. which of the following is the most appropriate initial step in management? - allow patient to clear foreign object by spontaneous coughing- clear oropharynx with multiple blind sweeps with finger- position patient and perform back blows- stand behind patient and perform abdominal thrusts- perform emergency tracheostomy and take to surgery

Waste is deposited into in thin layers which are then compacted and covered with soil.

Which of these contraceptive methods on its own is least likely to prevent pregnancy ? a. spermicides b. condoms c. surgical sterilization d. oral contraceptives