Top 100 presentations

1. Continuous Verb Tenses
   35250
2. Support and transport in plants
   33744
3. Anyong Tubig Anyong Lupa sa Asya
   29257
4. Elements compounds and mixtures
   25935
5. Chromosome
   21899
6. Simple Verb Tenses
   20769
7. Atomic Structure
   20122
8. Balancing Chemical Equations. Balancing redox equations
   20069
9. Periodic Behavior
   19852
10. Newton’s laws of motion
    18793
11. Periodic Trends
    16717
12. Adverbs
    16624
13. Percent Composition, Empirical and Molecular Formulas
    15948
14. Animal Farm
    15735
15. Bonding, Molecular Shape & Structure
    14686
16. MakingFood
    13353
17. Circulation and Gas Exchange
    13350
18. DNA - An overview
    12990
19. Fungi
    12842
20. Atomic Structure and Periodic Trends
    12786
21. Volumetric
    12630
22. Feminism- Cure or Curse
    12521
23. Atomic Structure and Periodicity
    12444
24. Hormones and the Endocrine System
    12070
25. Animal Development
    11953
26. Derivation Applications of Bernoulli Principal
    11847
27. Osmoregulation and Excretion
    11388
28. Plasma Membrane-Gateway to the Cell
    10742
29. Plant Structure, Growth, and Development
    10641
30. Acid, bases and salts
    10185
31. Development
    10155
32. Mirrors and Lenses
    10077
33. Structure of the Atom
    9901
34. Balanced forces
    9869
35. Ancient Civilizations
    9778
36. Mass Spectrometry
    9732
37. Pronouns
    9713
38. Nouns
    9648
39. Resource Acquisition and Transport in Vascular Plants
    9423
40. Forests
    9362
41. Support and transport in plants
    9299
42. Atomic Structure
    9271
43. Cell Types and Cell Structure
    8968
44. Newton’s third law of motion
    8888
45. Animal Nutrition
    8645
46. Transplantation Immunology
    8581
47. Cellular respiration
    8477
48. Growing Plants
    8313
49. Sensory and Motor Mechanisms
    8272
50. Electrical Circuits
    8214
51. Plant Responses to Internal and External Signals
    8061
52. Lab Equipment
    8002
53. Prepositions
    7953
54. Viruses, Viroids, and Prions
    7856
55. Neurons, Synapses, and Signaling
    7820
56. Of Mice and Men
    7773
57. A Tour of the Cell
    7636
58. Basic Structure of a Cell
    7622
59. Real time PCR and it's functions in diagnosis
    7571
60. Covalent Bonding (Molecules)
    7554
61. Plant structure adaptations and responses
    7525
62. Ionic Bonding
    7428
63. Cellular Division
    7393
64. Mendelian Genetics
    7032
65. To Kill a Mockingbird
    7027
66. Blood Type Genetics
    6987
67. Satellite Orbits and Uses NIS
    6974
68. Molecules and Ions
    6891
69. Well logging The Bore Hole
    6866
70. Sound
    6803
71. The Immune System
    6783
72. Membrane Structure and Function
    6690
73. Animal Reproduction
    6662
74. The Chemistry of Acids and Bases
    6609
75. Angiosperm Reproduction and Biotechnology
    6595
76. Rocks
    6587
77. Plant Diversity
    6542
78. Mendel and the Gene Idea
    6485
79. Cell Communication
    6467
80. Balancing Chemical Equations
    6454
81. Rate Laws
    6334
82. Drama
    6302
83. Hybridization of Orbitals
    6277
84. Introduction to Oscillations and Simple Harmonic Motion
    6271
85. The Building Blocks of Matter Atoms
    6206
86. Empirical Formula
    6193
87. Electron Quantum Numbers
    6135
88. An Introduction to Metabolism
    6076
89. Translation. Protein from RNA
    6074
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
    5837
95. Karyotypes
    5818
96. Earthquakes
    5813
97. ADP, ATP and Cellular Respiration
    5780
98. Endocrine System
    5744
99. Classical greek philosophy
    5638
100. Conjunction
     5604

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