Top 100 presentations

1. Continuous Verb Tenses
   35241
2. Support and transport in plants
   33739
3. Anyong Tubig Anyong Lupa sa Asya
   29251
4. Elements compounds and mixtures
   25931
5. Chromosome
   21892
6. Simple Verb Tenses
   20765
7. Atomic Structure
   20101
8. Balancing Chemical Equations. Balancing redox equations
   20063
9. Periodic Behavior
   19851
10. Newton’s laws of motion
    18786
11. Periodic Trends
    16715
12. Adverbs
    16620
13. Percent Composition, Empirical and Molecular Formulas
    15946
14. Animal Farm
    15732
15. Bonding, Molecular Shape & Structure
    14682
16. MakingFood
    13347
17. Circulation and Gas Exchange
    13341
18. DNA - An overview
    12982
19. Fungi
    12838
20. Atomic Structure and Periodic Trends
    12778
21. Volumetric
    12628
22. Feminism- Cure or Curse
    12520
23. Atomic Structure and Periodicity
    12437
24. Hormones and the Endocrine System
    12062
25. Animal Development
    11944
26. Derivation Applications of Bernoulli Principal
    11841
27. Osmoregulation and Excretion
    11377
28. Plasma Membrane-Gateway to the Cell
    10738
29. Plant Structure, Growth, and Development
    10628
30. Acid, bases and salts
    10180
31. Development
    10151
32. Mirrors and Lenses
    10072
33. Structure of the Atom
    9901
34. Balanced forces
    9865
35. Ancient Civilizations
    9775
36. Mass Spectrometry
    9729
37. Pronouns
    9712
38. Nouns
    9647
39. Resource Acquisition and Transport in Vascular Plants
    9414
40. Forests
    9359
41. Support and transport in plants
    9296
42. Atomic Structure
    9266
43. Cell Types and Cell Structure
    8966
44. Newton’s third law of motion
    8885
45. Animal Nutrition
    8639
46. Transplantation Immunology
    8576
47. Cellular respiration
    8476
48. Growing Plants
    8305
49. Sensory and Motor Mechanisms
    8268
50. Electrical Circuits
    8212
51. Plant Responses to Internal and External Signals
    8052
52. Lab Equipment
    8000
53. Prepositions
    7950
54. Viruses, Viroids, and Prions
    7853
55. Neurons, Synapses, and Signaling
    7817
56. Of Mice and Men
    7764
57. A Tour of the Cell
    7626
58. Basic Structure of a Cell
    7619
59. Real time PCR and it's functions in diagnosis
    7569
60. Covalent Bonding (Molecules)
    7552
61. Plant structure adaptations and responses
    7523
62. Ionic Bonding
    7426
63. Cellular Division
    7392
64. Mendelian Genetics
    7025
65. To Kill a Mockingbird
    7023
66. Blood Type Genetics
    6985
67. Satellite Orbits and Uses NIS
    6971
68. Molecules and Ions
    6889
69. Well logging The Bore Hole
    6864
70. Sound
    6797
71. The Immune System
    6775
72. Membrane Structure and Function
    6684
73. Animal Reproduction
    6657
74. The Chemistry of Acids and Bases
    6604
75. Angiosperm Reproduction and Biotechnology
    6587
76. Rocks
    6582
77. Plant Diversity
    6536
78. Mendel and the Gene Idea
    6479
79. Cell Communication
    6459
80. Balancing Chemical Equations
    6453
81. Rate Laws
    6332
82. Drama
    6301
83. Hybridization of Orbitals
    6274
84. Introduction to Oscillations and Simple Harmonic Motion
    6265
85. The Building Blocks of Matter Atoms
    6204
86. Empirical Formula
    6192
87. Electron Quantum Numbers
    6132
88. An Introduction to Metabolism
    6072
89. Translation. Protein from RNA
    6071
90. Neurons
    6003
91. The Structure and Function of Large Biological Molecules
    5901
92. The Mole
    5885
93. Cell Membrane + Tissues & Organs Definitions
    5845
94. Photosynthesis
    5831
95. Karyotypes
    5816
96. Earthquakes
    5811
97. ADP, ATP and Cellular Respiration
    5780
98. Endocrine System
    5742
99. Classical greek philosophy
    5634
100. Conjunction
     5599

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