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
   20880
7. Atomic Structure
   20426
8. Balancing Chemical Equations. Balancing redox equations
   20302
9. Periodic Behavior
   19990
10. Newton’s laws of motion
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11. Periodic Trends
    16801
12. Adverbs
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13. Percent Composition, Empirical and Molecular Formulas
    16051
14. Animal Farm
    15907
15. Bonding, Molecular Shape & Structure
    14871
16. Circulation and Gas Exchange
    13620
17. MakingFood
    13523
18. DNA - An overview
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19. Atomic Structure and Periodic Trends
    13081
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
    12603
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
    10899
29. Plasma Membrane-Gateway to the Cell
    10890
30. Acid, bases and salts
    10439
31. Development
    10337
32. Mirrors and Lenses
    10279
33. Structure of the Atom
    10016
34. Balanced forces
    9992
35. Ancient Civilizations
    9902
36. Resource Acquisition and Transport in Vascular Plants
    9818
37. Mass Spectrometry
    9815
38. Pronouns
    9793
39. Nouns
    9764
40. Support and transport in plants
    9465
41. Forests
    9443
42. Atomic Structure
    9391
43. Newton’s third law of motion
    9041
44. Cell Types and Cell Structure
    9029
45. Animal Nutrition
    8858
46. Transplantation Immunology
    8724
47. Cellular respiration
    8571
48. Sensory and Motor Mechanisms
    8504
49. Growing Plants
    8469
50. Plant Responses to Internal and External Signals
    8381
51. Electrical Circuits
    8315
52. Lab Equipment
    8118
53. Neurons, Synapses, and Signaling
    8048
54. Prepositions
    8024
55. Viruses, Viroids, and Prions
    7967
56. Of Mice and Men
    7922
57. A Tour of the Cell
    7906
58. Basic Structure of a Cell
    7722
59. Real time PCR and it's functions in diagnosis
    7699
60. Covalent Bonding (Molecules)
    7633
61. Cellular Division
    7591
62. Plant structure adaptations and responses
    7588
63. Ionic Bonding
    7495
64. Mendelian Genetics
    7188
65. To Kill a Mockingbird
    7141
66. Sound
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67. Satellite Orbits and Uses NIS
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68. Blood Type Genetics
    7073
69. The Immune System
    6991
70. Well logging The Bore Hole
    6981
71. Molecules and Ions
    6963
72. Membrane Structure and Function
    6906
73. Animal Reproduction
    6868
74. The Chemistry of Acids and Bases
    6819
75. Angiosperm Reproduction and Biotechnology
    6817
76. Mendel and the Gene Idea
    6737
77. Plant Diversity
    6718
78. Cell Communication
    6679
79. Rocks
    6657
80. Balancing Chemical Equations
    6558
81. Rate Laws
    6419
82. Introduction to Oscillations and Simple Harmonic Motion
    6406
83. Drama
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84. Hybridization of Orbitals
    6367
85. The Building Blocks of Matter Atoms
    6351
86. An Introduction to Metabolism
    6294
87. Empirical Formula
    6252
88. Electron Quantum Numbers
    6229
89. The Structure and Function of Large Biological Molecules
    6119
90. Translation. Protein from RNA
    6116
91. Neurons
    6104
92. Photosynthesis
    6057
93. The Mole
    5942
94. Cell Membrane + Tissues & Organs Definitions
    5938
95. Earthquakes
    5890
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)