The endosymbiosis theory
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Design a monitoring and schuduling program for irrigation
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Difference between conducting and respiratory zone structure

Q1. Trace a route of air from the nares to an alveolus. Name subdivisions of organs where applicable, and discriminate between conducting and respiratory zone structures.
Q2. A child pulls sled up a snow-covered hill. In the procedure child does 405 J of work on the sled. If she walks the distance of 15 m up the hill, how large a force does she exert on the sled?

 

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