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
   20616
7. Balancing Chemical Equations. Balancing redox equations
   19800
8. Atomic Structure
   19713
9. Periodic Behavior
   19671
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
    15862
14. Animal Farm
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15. Bonding, Molecular Shape & Structure
    14364
16. MakingFood
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17. Circulation and Gas Exchange
    13040
18. Fungi
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19. DNA - An overview
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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
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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
    10605
29. Plant Structure, Growth, and Development
    10385
30. Acid, bases and salts
    9956
31. Development
    9903
32. Mirrors and Lenses
    9837
33. Structure of the Atom
    9744
34. Balanced forces
    9738
35. Pronouns
    9644
36. Mass Spectrometry
    9636
37. Nouns
    9533
38. Ancient Civilizations
    9502
39. Forests
    9227
40. Support and transport in plants
    9156
41. Atomic Structure
    9133
42. Resource Acquisition and Transport in Vascular Plants
    9017
43. Cell Types and Cell Structure
    8893
44. Newton’s third law of motion
    8692
45. Animal Nutrition
    8442
46. Transplantation Immunology
    8405
47. Cellular respiration
    8308
48. Growing Plants
    8137
49. Electrical Circuits
    8105
50. Sensory and Motor Mechanisms
    8000
51. Prepositions
    7884
52. Lab Equipment
    7837
53. Plant Responses to Internal and External Signals
    7773
54. Viruses, Viroids, and Prions
    7699
55. Of Mice and Men
    7617
56. Neurons, Synapses, and Signaling
    7601
57. Basic Structure of a Cell
    7518
58. Covalent Bonding (Molecules)
    7464
59. Plant structure adaptations and responses
    7456
60. Real time PCR and it's functions in diagnosis
    7430
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. Blood Type Genetics
    6891
65. To Kill a Mockingbird
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66. Satellite Orbits and Uses NIS
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67. Molecules and Ions
    6815
68. Well logging The Bore Hole
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69. Mendelian Genetics
    6604
70. The Immune System
    6582
71. Membrane Structure and Function
    6498
72. Rocks
    6462
73. The Chemistry of Acids and Bases
    6454
74. Animal Reproduction
    6446
75. Sound
    6429
76. Balancing Chemical Equations
    6370
77. Angiosperm Reproduction and Biotechnology
    6370
78. Rate Laws
    6232
79. Cell Communication
    6216
80. Drama
    6210
81. Mendel and the Gene Idea
    6200
82. Hybridization of Orbitals
    6192
83. Plant Diversity
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84. Introduction to Oscillations and Simple Harmonic Motion
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85. Empirical Formula
    6084
86. The Building Blocks of Matter Atoms
    6079
87. Electron Quantum Numbers
    6048
88. Translation. Protein from RNA
    6029
89. Neurons
    5916
90. An Introduction to Metabolism
    5880
91. The Mole
    5807
92. Karyotypes
    5745
93. The Structure and Function of Large Biological Molecules
    5742
94. ADP, ATP and Cellular Respiration
    5731
95. Endocrine System
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96. Earthquakes
    5706
97. Cell Membrane + Tissues & Organs Definitions
    5674
98. Photosynthesis
    5547
99. Conjunction
    5523
100. Classical greek philosophy
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Research and Development, Experimental aerospace engineering center in Serbia (Space Technologies)