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Theo Chúa
1:13
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Trên đường hẹp của Chúa
0:57
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Living Healthier, Living Longer
2:49
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Treatment of Heart Disease
1:34
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Feedback Loops
1:54
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Applications of Medical Technology
1:36
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Xin Cha dạy con
3:14
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Thay lời muốn nói
0:10
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History of Medical Discoveries
2:22
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Endangered and Threatened Species
1:59
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Water conserving a Scarce Resource
1:57
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Producers and Consumers
1:10
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Negative Effects of Deforestation
1:55
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Restoring the Prairies
2:21
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Greenhouse Effect
0:45
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Succession
0:33
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The body system of a grasshopper
3:57
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Stages of Primary Succession
3:31
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Keystone Species
1:26
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Friendly Predators
1:44
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Earthworm Dissection
4:03
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Reef Invertebrates and Humans
1:58
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Planarian Behavior
3:07
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Behavior Studies of Twins
1:33
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Combining Innate and Learned Behaviors
1:41
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The link between Dinosaurs and Birds
1:11
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Mass Extinction
1:40
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Reproduction in Plants
1:43
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Lichens up close
2:27
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The economic Importance of Plants
1:27
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Helpful and Harmful Bacteria, Protists and Fungi
2:01
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Speciation
1:13
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Linnaeus Classfication System
1:22
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Discoveries of New Speices
1:28
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Applications of Biotechnology
1:44
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Karyotyping
1:30
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SexLinked traits
2:41
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Stem Cells
1:53
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The human genome
2:04
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Biology lesson
1:56
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Worldwide photosynthesis
1:36
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Fossil Formation
2:06
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Geologic time
1:20
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Problems with animal breeding
1:24
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Natural selection in bacteria
3:41
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Testing for the starches in food
2:41
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Protein
3:01
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The development of cell theory
2:35
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Osmosis
3:27
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Punnet Square
2:13
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plant cell
2:43
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Phases of Mitosis
2:08
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Onion root tip
2:46
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Pedigree Charts
2:34
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Metastasis
0:44
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Lipids
3:09
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living cell
1:14
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Life without DNA
1:57
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Making ATP
0:41
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Inherited diseases
2:11
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Extracting DNA
3:15
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Glycolysis
0:55
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Electron Microscopes
1:47
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Chlorophyll Chromatography
4:32
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Complementary Base Pairing
2:22
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Enzymes
0:55
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Cellular respiration in plants
3:57
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Cellular respiration
1:01