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Simple Pendulam
07:17
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Respiration in Organisms
05:53
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Physical Changes
05:13
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Magnetic Effect of Current
05:09
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Motion and Time
07:22
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Nutrition in Plants
13:15
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Nutrition in Animals
10:03
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Heating effect of Electric Current
06:13
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Indicators
07:02
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Heat
09:21
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Heat Effects and mode of Transfer
09:04
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Forest our Lifeline
09:53
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Fiber to Fabric wool
06:31
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Adaption of Animals to Climate
07:25
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Transportation in Animals
05:48
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Transportation in Plants
05:48
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Types of Respiration
07:53
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Water a Precious Resource
06:48
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Water Management
08:18
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Weather and Climate
07:15
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Fiber to Fabric silk
06:31