Top 100 presentations

1. Continuous Verb Tenses
   35250
2. Support and transport in plants
   33742
3. Anyong Tubig Anyong Lupa sa Asya
   29255
4. Elements compounds and mixtures
   25932
5. Chromosome
   21894
6. Simple Verb Tenses
   20768
7. Atomic Structure
   20117
8. Balancing Chemical Equations. Balancing redox equations
   20066
9. Periodic Behavior
   19852
10. Newton’s laws of motion
    18790
11. Periodic Trends
    16716
12. Adverbs
    16622
13. Percent Composition, Empirical and Molecular Formulas
    15947
14. Animal Farm
    15733
15. Bonding, Molecular Shape & Structure
    14683
16. MakingFood
    13351
17. Circulation and Gas Exchange
    13347
18. DNA - An overview
    12985
19. Fungi
    12840
20. Atomic Structure and Periodic Trends
    12782
21. Volumetric
    12629
22. Feminism- Cure or Curse
    12521
23. Atomic Structure and Periodicity
    12441
24. Hormones and the Endocrine System
    12067
25. Animal Development
    11949
26. Derivation Applications of Bernoulli Principal
    11845
27. Osmoregulation and Excretion
    11383
28. Plasma Membrane-Gateway to the Cell
    10740
29. Plant Structure, Growth, and Development
    10635
30. Acid, bases and salts
    10183
31. Development
    10153
32. Mirrors and Lenses
    10074
33. Structure of the Atom
    9901
34. Balanced forces
    9868
35. Ancient Civilizations
    9777
36. Mass Spectrometry
    9730
37. Pronouns
    9713
38. Nouns
    9647
39. Resource Acquisition and Transport in Vascular Plants
    9419
40. Forests
    9362
41. Support and transport in plants
    9298
42. Atomic Structure
    9269
43. Cell Types and Cell Structure
    8967
44. Newton’s third law of motion
    8885
45. Animal Nutrition
    8644
46. Transplantation Immunology
    8581
47. Cellular respiration
    8477
48. Growing Plants
    8309
49. Sensory and Motor Mechanisms
    8269
50. Electrical Circuits
    8213
51. Plant Responses to Internal and External Signals
    8056
52. Lab Equipment
    8002
53. Prepositions
    7952
54. Viruses, Viroids, and Prions
    7855
55. Neurons, Synapses, and Signaling
    7818
56. Of Mice and Men
    7767
57. A Tour of the Cell
    7629
58. Basic Structure of a Cell
    7622
59. Real time PCR and it's functions in diagnosis
    7571
60. Covalent Bonding (Molecules)
    7553
61. Plant structure adaptations and responses
    7525
62. Ionic Bonding
    7427
63. Cellular Division
    7392
64. Mendelian Genetics
    7031
65. To Kill a Mockingbird
    7024
66. Blood Type Genetics
    6987
67. Satellite Orbits and Uses NIS
    6973
68. Molecules and Ions
    6891
69. Well logging The Bore Hole
    6864
70. Sound
    6798
71. The Immune System
    6779
72. Membrane Structure and Function
    6685
73. Animal Reproduction
    6661
74. The Chemistry of Acids and Bases
    6608
75. Angiosperm Reproduction and Biotechnology
    6591
76. Rocks
    6584
77. Plant Diversity
    6540
78. Mendel and the Gene Idea
    6483
79. Cell Communication
    6463
80. Balancing Chemical Equations
    6454
81. Rate Laws
    6334
82. Drama
    6302
83. Hybridization of Orbitals
    6276
84. Introduction to Oscillations and Simple Harmonic Motion
    6267
85. The Building Blocks of Matter Atoms
    6205
86. Empirical Formula
    6192
87. Electron Quantum Numbers
    6133
88. An Introduction to Metabolism
    6074
89. Translation. Protein from RNA
    6072
90. Neurons
    6004
91. The Structure and Function of Large Biological Molecules
    5904
92. The Mole
    5887
93. Cell Membrane + Tissues & Organs Definitions
    5849
94. Photosynthesis
    5834
95. Karyotypes
    5816
96. Earthquakes
    5813
97. ADP, ATP and Cellular Respiration
    5780
98. Endocrine System
    5743
99. Classical greek philosophy
    5635
100. Conjunction
     5603

Research and Development, Experimental aerospace engineering center in Serbia (Space Technologies) . https://beautyandclassy.com