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
   20886
7. Atomic Structure
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8. Balancing Chemical Equations. Balancing redox equations
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9. Periodic Behavior
   19997
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
    16054
14. Animal Farm
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15. Bonding, Molecular Shape & Structure
    14877
16. Circulation and Gas Exchange
    13635
17. MakingFood
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18. DNA - An overview
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19. Atomic Structure and Periodic Trends
    13089
20. Fungi
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21. Volumetric
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22. Atomic Structure and Periodicity
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23. Feminism- Cure or Curse
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24. Hormones and the Endocrine System
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25. Animal Development
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26. Derivation Applications of Bernoulli Principal
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27. Osmoregulation and Excretion
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28. Plant Structure, Growth, and Development
    10905
29. Plasma Membrane-Gateway to the Cell
    10897
30. Acid, bases and salts
    10445
31. Development
    10343
32. Mirrors and Lenses
    10285
33. Structure of the Atom
    10019
34. Balanced forces
    9995
35. Ancient Civilizations
    9910
36. Resource Acquisition and Transport in Vascular Plants
    9828
37. Mass Spectrometry
    9818
38. Pronouns
    9796
39. Nouns
    9766
40. Support and transport in plants
    9473
41. Forests
    9447
42. Atomic Structure
    9397
43. Newton’s third law of motion
    9047
44. Cell Types and Cell Structure
    9032
45. Animal Nutrition
    8862
46. Transplantation Immunology
    8731
47. Cellular respiration
    8574
48. Sensory and Motor Mechanisms
    8512
49. Growing Plants
    8472
50. Plant Responses to Internal and External Signals
    8387
51. Electrical Circuits
    8322
52. Lab Equipment
    8121
53. Neurons, Synapses, and Signaling
    8052
54. Prepositions
    8024
55. Viruses, Viroids, and Prions
    7975
56. A Tour of the Cell
    7930
57. Of Mice and Men
    7924
58. Basic Structure of a Cell
    7726
59. Real time PCR and it's functions in diagnosis
    7705
60. Covalent Bonding (Molecules)
    7636
61. Cellular Division
    7605
62. Plant structure adaptations and responses
    7597
63. Ionic Bonding
    7497
64. Mendelian Genetics
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65. Sound
    7151
66. To Kill a Mockingbird
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67. Satellite Orbits and Uses NIS
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68. Blood Type Genetics
    7076
69. The Immune System
    6994
70. Well logging The Bore Hole
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71. Molecules and Ions
    6966
72. Membrane Structure and Function
    6914
73. Animal Reproduction
    6882
74. The Chemistry of Acids and Bases
    6829
75. Angiosperm Reproduction and Biotechnology
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76. Mendel and the Gene Idea
    6754
77. Plant Diversity
    6725
78. Cell Communication
    6687
79. Rocks
    6660
80. Balancing Chemical Equations
    6560
81. Rate Laws
    6420
82. Introduction to Oscillations and Simple Harmonic Motion
    6412
83. Drama
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84. Hybridization of Orbitals
    6371
85. The Building Blocks of Matter Atoms
    6355
86. An Introduction to Metabolism
    6317
87. Empirical Formula
    6257
88. Electron Quantum Numbers
    6233
89. The Structure and Function of Large Biological Molecules
    6160
90. Translation. Protein from RNA
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91. Neurons
    6107
92. Photosynthesis
    6063
93. The Mole
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94. Cell Membrane + Tissues & Organs Definitions
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95. Earthquakes
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96. Karyotypes
    5863
97. ADP, ATP and Cellular Respiration
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98. Population Ecology
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99. Classical greek philosophy
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100. Endocrine System
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Research and Development, Experimental aerospace engineering center in Serbia (Space Technologies)