One way that bacteria and fungi are important to the environment is that they? produce oxygen, use the sun's energy to make their own food, are a major food source in many ecosystems, break down dead organisms

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

During polarizacion potassium has a blank charge sodium has a blank charge and calcium has a blank charge

Which is a type of epithelial tissue? a. the skin on your hand b. cardiac muscle c. neurons d. cartilage