Feedback Mechanism | Positive and negative feedback | class 10

Aslam o alikum
I am Hassam ur Rahman and I am teaching Fsc biology since 2014 .I am always trying to improve myself and provide best lecture to students.i am taking content for the lecture from authentic and relevant sources but human errors are possible . you are requested to please highlight the mistakes.My lectures are equally reliable for Fsc and mdcat students
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This lecture is about
Feedback mechanism
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Sir can you send bio class 11 pdf