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
   20772
7. Atomic Structure
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8. Balancing Chemical Equations. Balancing redox equations
   20078
9. Periodic Behavior
   19858
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
    15952
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
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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. Plasma Membrane-Gateway to the Cell
    10749
29. Plant Structure, Growth, and Development
    10647
30. Acid, bases and salts
    10196
31. Development
    10158
32. Mirrors and Lenses
    10086
33. Structure of the Atom
    9905
34. Balanced forces
    9873
35. Ancient Civilizations
    9783
36. Mass Spectrometry
    9735
37. Pronouns
    9715
38. Nouns
    9650
39. Resource Acquisition and Transport in Vascular Plants
    9433
40. Forests
    9364
41. Support and transport in plants
    9305
42. Atomic Structure
    9276
43. Cell Types and Cell Structure
    8969
44. Newton’s third law of motion
    8894
45. Animal Nutrition
    8652
46. Transplantation Immunology
    8586
47. Cellular respiration
    8484
48. Growing Plants
    8319
49. Sensory and Motor Mechanisms
    8280
50. Electrical Circuits
    8218
51. Plant Responses to Internal and External Signals
    8075
52. Lab Equipment
    8007
53. Prepositions
    7958
54. Viruses, Viroids, and Prions
    7859
55. Neurons, Synapses, and Signaling
    7827
56. Of Mice and Men
    7776
57. A Tour of the Cell
    7640
58. Basic Structure of a Cell
    7630
59. Real time PCR and it's functions in diagnosis
    7579
60. Covalent Bonding (Molecules)
    7565
61. Plant structure adaptations and responses
    7527
62. Ionic Bonding
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63. Cellular Division
    7399
64. Mendelian Genetics
    7040
65. To Kill a Mockingbird
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66. Blood Type Genetics
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67. Satellite Orbits and Uses NIS
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68. Molecules and Ions
    6896
69. Well logging The Bore Hole
    6870
70. Sound
    6813
71. The Immune System
    6786
72. Membrane Structure and Function
    6697
73. Animal Reproduction
    6669
74. The Chemistry of Acids and Bases
    6621
75. Angiosperm Reproduction and Biotechnology
    6608
76. Rocks
    6591
77. Plant Diversity
    6547
78. Mendel and the Gene Idea
    6493
79. Cell Communication
    6475
80. Balancing Chemical Equations
    6461
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
    6208
86. Empirical Formula
    6196
87. Electron Quantum Numbers
    6137
88. An Introduction to Metabolism
    6081
89. Translation. Protein from RNA
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90. Neurons
    6010
91. The Structure and Function of Large Biological Molecules
    5907
92. The Mole
    5890
93. Cell Membrane + Tissues & Organs Definitions
    5853
94. Photosynthesis
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95. Karyotypes
    5821
96. Earthquakes
    5816
97. ADP, ATP and Cellular Respiration
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98. Endocrine System
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99. Classical greek philosophy
    5648
100. Conjunction
     5609

Research and Development, Experimental aerospace engineering center in Serbia (Space Technologies)