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Evan Lewis what is the total video time for AP/College Environmental Science?

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2. General Khan Academy Questions
3. Can someone tell me how to calculate the runtime of courses?

helena.damico_c What is the estimated completion time for this course in minutes or hours? I need to send in documentation to my school on the total amount of content in this course and I saw where...

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2. News and Updates from Khan Academy
3. Content Update: New material in AP Environmental Science course