Top 100 presentations

1. Continuous Verb Tenses
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2. Support and transport in plants
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3. Anyong Tubig Anyong Lupa sa Asya
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4. Elements compounds and mixtures
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5. Chromosome
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6. Simple Verb Tenses
   20663
7. Balancing Chemical Equations. Balancing redox equations
   19904
8. Atomic Structure
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9. Periodic Behavior
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10. Newton’s laws of motion
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11. Periodic Trends
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12. Adverbs
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13. Percent Composition, Empirical and Molecular Formulas
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14. Animal Farm
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15. Bonding, Molecular Shape & Structure
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16. MakingFood
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17. Circulation and Gas Exchange
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18. DNA - An overview
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19. Fungi
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20. Atomic Structure and Periodic Trends
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21. Volumetric
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22. Feminism- Cure or Curse
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23. Atomic Structure and Periodicity
    12313
24. Hormones and the Endocrine System
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25. Derivation Applications of Bernoulli Principal
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26. Animal Development
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27. Osmoregulation and Excretion
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28. Plasma Membrane-Gateway to the Cell
    10648
29. Plant Structure, Growth, and Development
    10484
30. Acid, bases and salts
    10041
31. Development
    9999
32. Mirrors and Lenses
    9953
33. Structure of the Atom
    9805
34. Balanced forces
    9775
35. Pronouns
    9666
36. Mass Spectrometry
    9665
37. Nouns
    9576
38. Ancient Civilizations
    9552
39. Forests
    9263
40. Resource Acquisition and Transport in Vascular Plants
    9222
41. Support and transport in plants
    9204
42. Atomic Structure
    9183
43. Cell Types and Cell Structure
    8914
44. Newton’s third law of motion
    8795
45. Animal Nutrition
    8532
46. Transplantation Immunology
    8462
47. Cellular respiration
    8393
48. Growing Plants
    8193
49. Electrical Circuits
    8137
50. Sensory and Motor Mechanisms
    8107
51. Lab Equipment
    7903
52. Prepositions
    7902
53. Plant Responses to Internal and External Signals
    7880
54. Viruses, Viroids, and Prions
    7753
55. Neurons, Synapses, and Signaling
    7698
56. Of Mice and Men
    7683
57. Basic Structure of a Cell
    7546
58. Covalent Bonding (Molecules)
    7499
59. Plant structure adaptations and responses
    7473
60. Real time PCR and it's functions in diagnosis
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61. A Tour of the Cell
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62. Ionic Bonding
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63. Cellular Division
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64. To Kill a Mockingbird
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65. Mendelian Genetics
    6941
66. Blood Type Genetics
    6915
67. Satellite Orbits and Uses NIS
    6870
68. Molecules and Ions
    6841
69. Well logging The Bore Hole
    6781
70. The Immune System
    6638
71. Sound
    6582
72. Membrane Structure and Function
    6559
73. Animal Reproduction
    6527
74. Rocks
    6507
75. The Chemistry of Acids and Bases
    6497
76. Angiosperm Reproduction and Biotechnology
    6470
77. Plant Diversity
    6423
78. Balancing Chemical Equations
    6397
79. Cell Communication
    6314
80. Mendel and the Gene Idea
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81. Rate Laws
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82. Drama
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83. Hybridization of Orbitals
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84. Introduction to Oscillations and Simple Harmonic Motion
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85. The Building Blocks of Matter Atoms
    6126
86. Empirical Formula
    6119
87. Electron Quantum Numbers
    6077
88. Translation. Protein from RNA
    6042
89. Neurons
    5950
90. An Introduction to Metabolism
    5940
91. The Mole
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92. The Structure and Function of Large Biological Molecules
    5797
93. Cell Membrane + Tissues & Organs Definitions
    5788
94. Karyotypes
    5773
95. ADP, ATP and Cellular Respiration
    5749
96. Earthquakes
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97. Endocrine System
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98. Photosynthesis
    5642
99. Conjunction
    5552
100. Classical greek philosophy
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Research and Development, Experimental aerospace engineering center in Serbia (Space Technologies)