diff --git a/src/activities/categorization/README b/src/activities/categorization/README
index 1b29e63f1..7a4ff2506 100644
--- a/src/activities/categorization/README
+++ b/src/activities/categorization/README
@@ -1,151 +1,156 @@
-1. https://commons.wikimedia.org/wiki/File:Baseball_(crop).jpg by Tage Olsin / CC-BY-SA 2.0
-2. https://commons.wikimedia.org/wiki/File:Schiefertafelmitschwamm.jpg by Peng / CC-BY-SA 3.0
-3. https://commons.wikimedia.org/wiki/File:Balde.PNG / Public Domain
-4. https://commons.wikimedia.org/wiki/File:Lincoln_buff_set_-_1864.jpg by Detweiler, Susan G. / Public domain
-5. https://commons.wikimedia.org/wiki/File:Gluehlampe_01_KMJ.jpg by KMJ / CC-BY-SA 3.0
-6. https://commons.wikimedia.org/wiki/File:Chair_5709.jpg by Dori / CC-BY-SA 3.0
-7. https://commons.wikimedia.org/wiki/File:Stanley_graphite_claw_hammer.jpg by Typhoon / CC-By-SA 3.0 **
-8. https://commons.wikimedia.org/wiki/File:Claw_hammer-1.jpg by Shakespeare / CC-BY-SA 3.0
-9. https://commons.wikimedia.org/wiki/File:A_cup_of_Tea.jpg by Shreya13jain / CC-BY-SA 4.0
-10. https://commons.wikimedia.org/wiki/File:Cutting_tool_1a.jpg by Ivob / Public Domain
-11. https://commons.wikimedia.org/wiki/File:Faber_Castell_Erasers.jpg by M1ss1ontomars2k4 / CC-BY-SA 3.0
-12. https://commons.wikimedia.org/wiki/File:Estwing_hammer.JPG by Bubba73 / CC-BY-SA 3.0
-13. https://commons.wikimedia.org/wiki/File:Framing_hammer.jpg by Luigi Zanasi / CC-BY-SA 2.0
-14. https://commons.wikimedia.org/wiki/File:Carpenter%27s_hammer.JPG by Kszapsza / CC-BY-SA 3.0
-15. https://commons.wikimedia.org/wiki/File:Cortaunyas.jpg / public domain
-16. https://commons.wikimedia.org/wiki/File:Flowered_hammer.jpg by Kulmalukko / CC-BY-SA 3.0
-17. https://commons.wikimedia.org/wiki/File:Claw-hammer.jpg by Evan-Amos / Public domain
-18. https://commons.wikimedia.org/wiki/File:Hammer.JPG by Tjcase2 / CC-BY-SA 3.0
-19. https://commons.wikimedia.org/wiki/File:Hultafors_HHSH_16.JPG by Dmitry G / Public Domain
-20. https://commons.wikimedia.org/wiki/File:Igloo.jpg / Public Domain
-21. https://commons.wikimedia.org/wiki/File:Chef%27s_knife.jpg by ProjectManhattan / CC-BY-SA 3.0
-22. https://commons.wikimedia.org/wiki/File:Tape_measure_colored.jpeg by Simon A. Eugster / CC-BY-SA 3.0
-23. https://commons.wikimedia.org/wiki/File:Messband_1a.jpg by Manfred Brückels / GNU Free Documentation License
-24. https://commons.wikimedia.org/wiki/File:Plastic_tape_measure.jpg by Pastorius / CC-BY-SA 3.0
-25. https://commons.wikimedia.org/wiki/File:Metre_couturiere.jpg by KoS / CC-BY-SA 3.0
-26. https://commons.wikimedia.org/wiki/File:Free_coiled_tape_measure_healthy_living_stock_photo_Creative_Commons_(3209939998).jpg by Pink Sherbet Photography / CC-BY-SA 2.0
-27. https://commons.wikimedia.org/wiki/File:Tape_measure_diagonal_2.jpg by Douglas Perkins / CCO
-28. https://commons.wikimedia.org/wiki/File:Fluke_23_multimeter.jpg by Alex P. Kok / CC-BY-SA 4.0
-29. https://commons.wikimedia.org/wiki/File:Multimeter_Gossen_Metra_Hit.jpg by Harke / CC-BY-SA 3.0
-30. https://commons.wikimedia.org/wiki/File:Multimeter_DT-830.jpg by Chabrez / Public Domain
-31. https://commons.wikimedia.org/wiki/File:Western_Forge_Craftsman_Professional_long-nose_pliers.jpg by Typhoon / CC-BY-SA 3.0
-32. https://commons.wikimedia.org/wiki/File:Needle_nose_pliers.jpg by Dori / Public Domain
-33. https://commons.wikimedia.org/wiki/File:Long-nosePliers.jpg by Raysonho @ Open Grid Scheduler / CCO
-34. https://commons.wikimedia.org/wiki/File:Klein_Journeyman_long-nose_pliers.jpg by Typhoon / CC-BY-SA 3.0
-35. https://commons.wikimedia.org/wiki/File:Basic_NeedleNose_Pliers.jpg by bomazi / CC-BY-SA 2.0
-36. https://commons.wikimedia.org/wiki/File:Pfanne_(Gusseisen).jpg by Suricata / Public domain
-37. https://commons.wikimedia.org/wiki/File:2014-01-16-Hittegods_(12009261426).jpg by Ole Palnatoke Andersen / CC-BY-SA 2.0
-38. https://commons.wikimedia.org/wiki/File:Bristol_MMB_24_The_Galleries.jpg by mattbuck / CC-BY-SA 3.0
-39. https://commons.wikimedia.org/wiki/File:Arktika-plate_hg.jpg by Hannes Grobe / CC-BY-SA 3.0
-40. https://commons.wikimedia.org/wiki/File:Plier_electric.jpg by by Baran Ivo / Public Domain
-41. https://commons.wikimedia.org/wiki/File:Plier01.jpg by Baran Ivo / Public Domain
-42. https://commons.wikimedia.org/wiki/File:Lux_1000V_PP.jpg by Dmitry G / Public domain
-43. https://commons.wikimedia.org/wiki/File:Scissors.jpg by Tarquin / CC-BY-SA 3.0
-44. https://commons.wikimedia.org/wiki/File:Scissor-for-paper.jpg by Pavel Krok / CC-BY-SA 2.5
-45. https://commons.wikimedia.org/wiki/File:Schere_Gr_99.jpg / CC-BY-SA 3.0
-46. https://commons.wikimedia.org/wiki/File:Scissor.JPG / CC-BY-SA 3.0
-47. https://commons.wikimedia.org/wiki/File:2scissors.jpg / CC-BY-SA 1.0
-48. https://commons.wikimedia.org/wiki/File:Screw_driver.jpg by Dmitry G / Public Domain
-49. https://commons.wikimedia.org/wiki/File:Pompschroevendraaier_(screw_driver).jpg by Rasbak / CC-BY-SA 3.0
-50. https://commons.wikimedia.org/wiki/File:Torque-screw-driver.jpg by Dezertscorpion / Public domain
-51. https://commons.wikimedia.org/wiki/File:Screw_Driver_display.jpg by Fvb981 / CC-BY-SA 3.0
-52. https://commons.wikimedia.org/wiki/File:Stainless_Steel_Sickle.jpg by Nikunjbhaldoi / CC-BY-SA 4.0
-53. https://commons.wikimedia.org/wiki/File:Carbon_steel_diagonal_side_cutters.jpg by M338 / public domain
-54. https://commons.wikimedia.org/wiki/File:Arte_bizantina%2C_servizio_di_12_cucchiai_d%27argento%2C_650_ca._01.JPG by Sailko / CC-BY-SA 3.0
-55. https://commons.wikimedia.org/wiki/File:Wikibooks_planting-water.jpg by Theornamentalist / CC-BY-SA 3.0
-56. https://commons.wikimedia.org/wiki/File:Blue_wire_stripper.png by MehranVB / CC-BY-SA 3.0
-57. https://commons.wikimedia.org/wiki/File:Tweezer.jpg by Swathysuren / CC-BY-SA 4.0
-58. https://commons.wikimedia.org/wiki/File:Tweezer-plastic.JPG by ZooFari / CC-BY-SA 3.0
-59. https://commons.wikimedia.org/wiki/File:Volleyball.jpg / Public domain
-60. https://commons.wikimedia.org/wiki/File:Weighing_Machine_In_Market.jpg by Bhaskaranaidu / CC-BY-SA 3.0
-61. https://commons.wikimedia.org/wiki/File:Monkey_wrench.jpg by Dori / public domain
-62. https://commons.wikimedia.org/wiki/File:Adjustable_wrench.jpg by Dori / public domain
+Fishes:
+1. fish1.jpg: https://commons.wikimedia.org/wiki/File:Black_sea_fauna_stingray_01.jpg by Florin DUMITRESCU / public domain
+2. fish2.jpg: https://species.wikimedia.org/wiki/File:Ameiurus_melas_by_Duane_Raver.png by Duane Raver / public domain
+3. fish3.jpg: https://commons.wikimedia.org/wiki/File:Gullfiskur.jpg by Elma / CC BY 2.0
+4. fish5.jpg: https://incubator.wikimedia.org/wiki/File:YellowPerch.jpg by Hadal / public domain
+5. fish5.jpg: https://commons.wikimedia.org/wiki/File:Bowfin_fish_image.jpg by Duane Raver, U.S. Fish and Wildlife Service / public domain
+6. fish6.jpg: https://commons.wikimedia.org/wiki/File:Aquarium_tropical_du_Palais_de_la_Porte_Dorée_-_Potamotrygon_leopoldi.jpg by KoS / CC BY-SA 3.0
+7. fish7.jpg: https://commons.wikimedia.org/wiki/File:Astronotus_ocellatus.jpg by Jón Helgi Jónsson (Amything) / CC BY-SA 3.0
+8. fish8.jpg: https://commons.wikimedia.org/wiki/File:Atlantischer_Lachs.jpg by Hartley, William W / public domain
+9. fish9.jpg: https://commons.wikimedia.org/wiki/File:Cheilinus_undulatus_1.jpg by Stan Shebs / CC BY-SA 3.0
+10. fish10.jpg: https://commons.wikimedia.org/wiki/File:Chelmon_rostratus_Kupferstreifen-Pinzettfisch.jpg by BS Turner Hof / CC BY-SA 3.0
+11. fish11.jpg: https://commons.wikimedia.org/wiki/File:Chlamydoselachus_anguineus2.jpg by Citron / CC BY-SA 3.0
+12. fish12.jpg: https://commons.wikimedia.org/wiki/File:Group_of_Pterophyllum_Altum.jpg by Jeff Kubina / CC BY-SA 2.0
+13. fish13.jpg: https://lv.wikipedia.org/wiki/Att%C4%93ls:Guppy-male.jpg by Jdiemer / CC BY-SA 3.0
+14. fish14.jpg: https://commons.wikimedia.org/wiki/File:Hammerhead_shark.jpg by suneko / CC BY 2.0
+15. fish15.jpg: https://commons.wikimedia.org/wiki/File:Heterodontus_francisci_catalina_cropped.jpg by Ed Bierman / CC BY 2.0
+16. fish16.jpg: https://incubator.wikimedia.org/wiki/File:Macropodus_opercularis_-_front_(aka).jpg by André Karwath / CC BY-SA 2.5
+17. fish17.jpg: https://commons.wikimedia.org/wiki/File:Male_whale_shark_at_Georgia_Aquarium.jpg by Zac Wolf / CC BY-SA 2.5
+18. fish18.jpg: https://commons.wikimedia.org/wiki/File:Pristiophorus_japonicus.jpg by OpenCago.info / CC BY-SA 2.5
+19. fish19.jpg: https://commons.wikimedia.org/wiki/File:Raja_clavata_(BPNS).jpg by Hans Hillewaert / CC BY-SA 4.0
+20. fish20.jpg: https://commons.wikimedia.org/wiki/File:Synchiropus_splendidus_2_Luc_Viatour.jpg by Luc Viatour / CC BY-SA 3.0
+21. fish21.jpg: https://commons.wikimedia.org/wiki/File:White_shark.jpg by Terry Goss / CC BY-SA 3.0
+22. fish22.jpg: https://commons.wikimedia.org/wiki/File:Georgia_Aquarium_-_Giant_Grouper_edit.jpg by Diliff / CC BY-SA 3.0
+23. fish23.jpg: https://hr.wikipedia.org/wiki/Datoteka:Alligator_gar_fish.jpg by Duane Raver / public domain
+24. fish24.jpg: https://commons.wikimedia.org/wiki/File:Common_carp.jpg by Duane Raver / public domain
+25. fish25.jpg: https://commons.wikimedia.org/wiki/File:Goldfisch_1.jpg by Necrophorus / public domain
+26. fish26.jpg: https://commons.wikimedia.org/wiki/File:Titan_Triggerfish_(or_Giant_Triggerfish,_or_Moustache_Triggerfish),_Balistoides_viridescens_feeding_at_Sataya_Reef,_Red_Sea,_Egypt_-SCUBA_(6395402117).jpg by Derek Keats / CC BY 2.0
+27. fish27.jpg: https://commons.wikimedia.org/wiki/File:Squatina_squatina_tenerife2.jpg by Philippe Guillaume / CC BY 2.0
+28. fish28.jpg: https://commons.wikimedia.org/wiki/File:Titan_Triggerfish_(or_Giant_Triggerfish,_or_Moustache_Triggerfish),_Balistoides_viridescens_lying_down_for_a_cleaning_at_Elphinstone_Reef,_Red_Sea,_Egypt_-SCUBA_(6194695879).jpg by Derek Keats / CC BY 2.0
 
-63. https://commons.wikimedia.org/wiki/File:Arc_de_Triomphe_du_Carrousel_12_June_2006.jpg by Dan Mckay / CC-BY-SA 2.0
-64. https://commons.wikimedia.org/wiki/File:Bayterek_(525155966).jpg by Bayterek / CC-BY-SA 2.0
-65. https://commons.wikimedia.org/wiki/File:Brandenburger_Tor_-_freakyman_2.jpg by freakyman/ CC-BY-SA 2.0
-66. https://commons.wikimedia.org/wiki/File:Burj_Dubai_Under_Construction_on_13_November_2007.jpg by Imre Solt / CC-BY-SA 3.0
-67. https://commons.wikimedia.org/wiki/File:Santiago.de.Compostela.Catedral.Noche.jpg by Yearofthedragon / CC-BY-SA 3.0
-67. https://commons.wikimedia.org/wiki/File:Colosseum-night.jpg by Jimmy Engelbrecht / CC-BY-SA 3.0
-68. https://commons.wikimedia.org/wiki/File:O_Cristo_Redentor.JPG by KátiaLira / CC-BY-Sa 3.0
-69. https://commons.wikimedia.org/wiki/File:Eiffel_Tower_from_north_Avenue_de_New_York%2C_Aug_2010.jpg byJulie Anne Workman / CC-BY-SA 3.0
-70. https://commons.wikimedia.org/wiki/File:Empire_State_Building_in_New_York.JPG by Lolalatorre / CC-BY-SA 3.0
-71. https://commons.wikimedia.org/wiki/File:Kheops-Pyramid.jpg by Nina / CC-BY-SA 3.0
-72. https://commons.wikimedia.org/wiki/File:The_Great_wall_-_by_Hao_Wei.jpg by Hao Wei / CC-BY-SA 2.0
-73. https://commons.wikimedia.org/wiki/File:India_Gate_illuminated.jpg by Rdglobetrekker / CC-BY-SA 3.0
-74. https://commons.wikimedia.org/wiki/File:Juche_Tower_2012.JPG by Nicor / CC-BY-SA 3.0
-75. https://commons.wikimedia.org/wiki/File:Qutb_Minar_tower.jpg by Ondřej Žváček / CC-BY-SA 3.0
-76. https://commons.wikimedia.org/wiki/File:Torre_di_Pisa.jpg by Dan Kamminga / CC-BY-SA 2.0
-77. https://commons.wikimedia.org/wiki/File:Le_mus%C3%A9e_du_Louvre_(4750261198).jpg by Jean-Pierre Dalbéra / CC-BY-SA 3.0
-78. https://commons.wikimedia.org/wiki/File:Former_Lenin_museum_(Moscow)_by_shakko_01.jpg by Shakko / CC-BY-SA 4.0
-79. https://commons.wikimedia.org/wiki/File:Israel-2013(2)-Jerusalem-Temple_Mount-Dome_of_the_Rock_(SE_exposure).jpg by Andrew Shiva / CC-BY-SA 4.0
-80. https://commons.wikimedia.org/wiki/File:Apamea_Tetrastylon.jpg by Abdulhadi Najjar / CC-BY-SA 3.0
-81. https://commons.wikimedia.org/wiki/File:Franz_von_Assisi_Kirche-DSC_0004w.jpg by Peter Haas / CC-BY-SA 3.0
-82. https://commons.wikimedia.org/wiki/File:Dean_Franklin_-_06.04.03_Mount_Rushmore_Monument_(by-sa)-3_new.jpg by Dean Franklin / CC-BY-SA 2.0
-83. https://commons.m.wikimedia.org/wiki/File:Sydney_opera_house_side_view.jpg by Mfield / CC-BY-SA 3.0
-84. https://commons.wikimedia.org/wiki/File:2006_01_21_Ath%C3%A8nes_Parth%C3%A9non.JPG by Harrieta / CC-BY-SA 3.0
-85. https://commons.wikimedia.org/wiki/File:Statue-de-la-liberte-new-york.jpg by featherboa / CC-BY-SA 2.0
-86. https://commons.wikimedia.org/wiki/File:Taj_Mahal%2C_Agra%2C_India.jpg by Yann / CC-BY-SA 4.0
-87. https://commons.wikimedia.org/wiki/File:US_Capitol_east_side.JPG by Martin Falbisoner / CC-BY-SA 3.0
-88. https://commons.wikimedia.org/wiki/File:Memorial_a_Victoria,_Londres,_Inglaterra,_2014-08-07,_DD_008.JPG by Diego Delso / CC-BY-SA 3.0
-89. https://commons.wikimedia.org/wiki/File:Zimn%C3%AD_pal%C3%A1c_%283%29.jpg by Dezidor / CC-BY-SA 3.0
+Monuments:
+1. arcDeTriomphe.jpg: https://commons.wikimedia.org/wiki/File:Arc_de_Triomphe_du_Carrousel_12_June_2006.jpg by Dan Mckay / CC BY-SA 2.0
+2. bayterek.jpg: https://commons.wikimedia.org/wiki/File:Bayterek_(525155966).jpg by Alastair Rae / CC BY-SA 2.0
+3. beandenburgGate.jpg: https://commons.wikimedia.org/wiki/File:Brandenburger_Tor_-_freakyman_2.jpg by freakyman / CC BY 2.0
+4. burj.jpg: https://commons.wikimedia.org/wiki/File:Burj_Dubai_Under_Construction_on_13_November_2007.jpg by Imre Solt / CC BY-SA 3.0
+5. cathedral.jpg: https://commons.wikimedia.org/wiki/File:Santiago.de.Compostela.Catedral.Noche.jpg by Yearofthedragon / CC BY-SA 3.0
+6. Colosseum.jpg: https://commons.wikimedia.org/wiki/File:Colosseum-night.jpg by Jimmy Engelbrecht / CC BY-SA 3.0
+7. christTheRedeemer.jpg: https://commons.wikimedia.org/wiki/File:O_Cristo_Redentor.JPG by KátiaLira / CC BY-SA 3.0
+8. eiffelTower.jpg: https://commons.wikimedia.org/wiki/File:Eiffel_Tower_from_north_Avenue_de_New_York%2C_Aug_2010.jpg byJulie Anne Workman / CC BY-SA 3.0
+9. empireState.jpg: https://commons.wikimedia.org/wiki/File:Empire_State_Building_in_New_York.JPG by Lolalatorre / CC BY-SA 3.0
+10. greatPyramid.jpg: https://commons.wikimedia.org/wiki/File:Kheops-Pyramid.jpg by Nina / CC BY-SA 3.0
+11. greatWall.jpg: https://commons.wikimedia.org/wiki/File:The_Great_wall_-_by_Hao_Wei.jpg by Hao Wei / CC BY 2.0
+12. IndiaGate.jpg: https://commons.wikimedia.org/wiki/File:India_Gate_illuminated.jpg by Rdglobetrekker / CC BY-SA 3.0
+13. jucheTower.jpg: https://commons.wikimedia.org/wiki/File:Juche_Tower_2012.JPG by Nicor / CC BY-SA 3.0
+14. kutubMinar.jpg: https://commons.wikimedia.org/wiki/File:Qutb_Minar_tower.jpg by Ondřej Žváček / CC BY-SA 3.0
+15. leaningTowerOfPisa.jpg: https://commons.wikimedia.org/wiki/File:Torre_di_Pisa.jpg by Dan Kamminga / CC BY 2.0
+16. leMusee.jpg: https://commons.wikimedia.org/wiki/File:Le_mus%C3%A9e_du_Louvre_(4750261198).jpg by Jean-Pierre Dalbéra / CC BY 2.0
+17. leninMuseum.jpg: https://commons.wikimedia.org/wiki/File:Former_Lenin_museum_(Moscow)_by_shakko_01.jpg by Shakko / CC BY-SA 4.0
+18. monument1.jpg: https://commons.wikimedia.org/wiki/File:Israel-2013(2)-Jerusalem-Temple_Mount-Dome_of_the_Rock_(SE_exposure).jpg by Andrew Shiva / CC BY-SA 4.0
+19. monument2.jpg: https://commons.wikimedia.org/wiki/File:Apamea_Tetrastylon.jpg by Abdulhadi Najjar / CC BY-SA 3.0
+20. monument3.jpg: https://commons.wikimedia.org/wiki/File:Franz_von_Assisi_Kirche-DSC_0004w.jpg by Peter Haas / CC BY-SA 3.0 AT
+21. mountRushmore.jpg: https://commons.wikimedia.org/wiki/File:Dean_Franklin_-_06.04.03_Mount_Rushmore_Monument_(by-sa)-3_new.jpg by Dean Franklin / CC BY 2.0
+22. operaHouse.jpg: https://commons.m.wikimedia.org/wiki/File:Sydney_opera_house_side_view.jpg by Mfield / CC BY-SA 3.0
+23. parthenon.jpg: https://commons.wikimedia.org/wiki/File:2006_01_21_Ath%C3%A8nes_Parth%C3%A9non.JPG by Harrieta / CC BY-SA 3.0
+24. statueOfLiberty.jpg: https://commons.wikimedia.org/wiki/File:Statue-de-la-liberte-new-york.jpg by featherboa / CC BY-SA 2.0
+25. tajMahal.jpg: https://commons.wikimedia.org/wiki/File:Taj_Mahal%2C_Agra%2C_India.jpg by Yann / CC BY-SA 4.0
+26. usCapitol.jpg: https://commons.wikimedia.org/wiki/File:US_Capitol_east_side.JPG by Martin Falbisoner / CC BY-SA 3.0
+27. victoriaMemorial.jpg: https://commons.wikimedia.org/wiki/File:Memorial_a_Victoria,_Londres,_Inglaterra,_2014-08-07,_DD_008.JPG by Diego Delso / CC BY-SA 4.0
+28. zimniPalace.jpg: https://commons.wikimedia.org/wiki/File:Zimn%C3%AD_pal%C3%A1c_%283%29.jpg by Dezidor / CC BY 3.0
 
-89. https://commons.wikimedia.org/wiki/File:Barrage_Oued_Kasseb_**_beja_02.jpg by Elarbi alaeddin / CC-BY-SA 3.0
-90. https://commons.wikimedia.org/wiki/File:Bekes-dam_duzzaszto.jpg by László Szalai / public domain
-91. https://commons.wikimedia.org/wiki/File:Grand_Coulee_Dam_spillway.jpg by David Brodbeck / CC-BY-SA 2.0
-92. https://commons.wikimedia.org/wiki/File:Takato_Dam_discharge.jpg by Qurren / CC-BY-SA 3.0
-93. https://commons.wikimedia.org/wiki/File:Air_curtain_burn_at_Floyd_Bennett_Field_DVIDS790750.jpg by Chris Kleponis / Public domain
-94. https://commons.wikimedia.org/wiki/File:Kanjirapuzha_dam_2.JPG by Shijualex / CC-BY-SA 3.0
-95. https://commons.wikimedia.org/wiki/File:G%C3%A9iseres_del_Tatio,_Atacama,_Chile,_2016-02-01,_DD_56-57_HDR.JPG by Diego Delso / CC-BY-SA 4.0
-96. https://commons.wikimedia.org/wiki/File:Solar_cooker_1.jpg by Nadya Peek / CC-BY-SA 2.0
-97. https://commons.wikimedia.org/wiki/File:%22Sungril%22_solar_cooker_photo1.jpg by Fluffyarse / CCO
-98. https://commons.wikimedia.org/wiki/File:White_Cliffs_solar_plant.jpg by Richard Gifford / CC-BY-SA 2.0
-99. https://commons.wikimedia.org/wiki/File:Hybrid_Solar_Energy_System.jpg by ENERGY.GOV / public domain
-100. https://commons.wikimedia.org/wiki/File:PV_installation_for_fish_cooling_in_Baleia_CE.jpg by Riosolar / CC-BY-SA 4.0
-101. https://commons.wikimedia.org/wiki/File:University_Park_MMB_B2_Built_Environment.jpg by mattbuck / CC-BY-SA 3.0**
-102. https://commons.wikimedia.org/wiki/File:Hybrid_Solar_Energy_System.jpg by ENERGY.GOV / Public domain
-103. https://commons.wikimedia.org/wiki/File:Solarmodul_Sonnenkollektor_01_KMJ.jpg by KMJ / CC-BY-SA 3.0
-104. https://commons.wikimedia.org/wiki/File:Chesterton_Windmill.jpg ny G-Man / Public domain
-105. https://commons.wikimedia.org/wiki/File:Campo_de_Criptana_Molinos_de_Viento_2.jpg by Lourdes Cardenal / CC-BY-SA 3.0
-106. https://commons.wikimedia.org/wiki/File:Tuuleveski_Muhul1.jpg by Hendrix / CC-BY-SA 3.0
-107. https://commons.wikimedia.org/wiki/File:Podersdorf_Windm%C3%BChle_2008_a.JPG by Joadl / CC-BY-SA 3.0
-108. https://commons.wikimedia.org/wiki/File:Pala_eolica_Mele_04.jpg by Alessio Sbarbaro / CC-BY-SA 3.0
-109. https://commons.wikimedia.org/wiki/File:Steenmeulen_(Terdeghem).jpg by Lion59 / CC-BY-SA 3.0
-110. https://commons.wikimedia.org/wiki/File:Windmill.jpg by xavigaya / GPL
-111. https://commons.wikimedia.org/wiki/File:Saint-Vaast_en_Cambresis_Le_Moulin.jpg by J.c.houd / CC-BY-SA 1.0
-112. https://commons.wikimedia.org/wiki/File:Aalbeke.-_le_Hoogmolen,.JPG by PIERRE ANDRE LECLERCQ / CC-BY-SA 4.0
-113. https://hy.wikipedia.org/wiki/%D5%8A%D5%A1%D5%BF%D5%AF%D5%A5%D6%80:Cyclades_Mill.jpg by Wolfgang Staudt / CC-BY-SA 2.0
-114. https://commons.wikimedia.org/wiki/File:Vestast_S%C3%BCderdeich.JPG by Dirk Ingo Franke / CC-BY-SA 2.0
-115. https://commons.wikimedia.org/wiki/File:Ellezelles_JPG02.jpg by Jean-Pol GRANDMONT / CC-BY-SA 2.0
-116. https://commons.wikimedia.org/wiki/File:Moulbaix_MV1cJPG.jpg by Jean-Pol GRANDMONT / CC-BY-SA 3.0
-117. https://commons.wikimedia.org/wiki/File:Trapani_Windmill.jpg by Francesco Pappalardo / CC-BY-SA 2.0
-118. https://commons.wikimedia.org/wiki/File:Tehachapi_wind_farm_3.jpg by Stan Shebs / CC-BY-SA 3.0
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+17. weighingMachine.jpg: https://commons.wikimedia.org/wiki/File:Weighing_Machine_In_Market.jpg by Bhaskaranaidu / CC BY-SA 3.0
 
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-120. https://species.wikimedia.org/wiki/File:Ameiurus_melas_by_Duane_Raver.png by Duane Raver / public domain
-121. https://commons.wikimedia.org/wiki/File:Gullfiskur.jpg by Elma / CC-BY-SA 2.0
-122. https://incubator.wikimedia.org/wiki/File:YellowPerch.jpg by Hadal / public domain
-123. https://commons.wikimedia.org/wiki/File:Bowfin_fish_image.jpg by Duane Raver, U.S. Fish and Wildlife Service / public domain
-124. https://commons.wikimedia.org/wiki/File:Aquarium_tropical_du_Palais_de_la_Porte_Dorée_-_Potamotrygon_leopoldi.jpg by KoS / CC-BY-SA 3.0
-125. https://commons.wikimedia.org/wiki/File:Astronotus_ocellatus.jpg by Jón Helgi Jónsson (Amything) / CC-BY-SA 3.0
-126. https://commons.wikimedia.org/wiki/File:Atlantischer_Lachs.jpg by Hartley, William W / public domain
-127. https://commons.wikimedia.org/wiki/File:Cheilinus_undulatus_1.jpg by Stan Shebs / CC-BY-SA 3.0
-128. https://commons.wikimedia.org/wiki/File:Chelmon_rostratus_Kupferstreifen-Pinzettfisch.jpg by BS Turner Hof / CC-BY-SA 3.0
-129. https://commons.wikimedia.org/wiki/File:Chlamydoselachus_anguineus2.jpg by Citron / CC-BY-SA 3.0
-130. https://commons.wikimedia.org/wiki/File:Group_of_Pterophyllum_Altum.jpg by Jeff Kubina / CC-BY-SA 3.0
-131. https://lv.wikipedia.org/wiki/Att%C4%93ls:Guppy-male.jpg / CC-BY-SA 3.0 **
-132. https://commons.wikimedia.org/wiki/File:Hammerhead_shark.jpg by suneko / CC-BY-SA 2.0
-133. https://commons.wikimedia.org/wiki/File:Heterodontus_francisci_catalina_cropped.jpg by Ed Bierman / CC-BY-SA 2.0
-134. https://incubator.wikimedia.org/wiki/File:Macropodus_opercularis_-_front_(aka).jpg by André Karwath / CC-BY-SA 2.5
-135. https://commons.wikimedia.org/wiki/File:Male_whale_shark_at_Georgia_Aquarium.jpg by Zac Wolf / CC-BY-SA 2.5
-136. https://commons.wikimedia.org/wiki/File:Pristiophorus_japonicus.jpg by OpenCago.info / CC-BY-SA 2.5
-137. https://commons.wikimedia.org/wiki/File:Raja_clavata_(BPNS).jpg by Hans Hillewaert / CC BY-SA 4.0
-138. https://commons.wikimedia.org/wiki/File:Synchiropus_splendidus_2_Luc_Viatour.jpg by Luc Viatour / CC-BY-SA 3.0
-139. https://commons.wikimedia.org/wiki/File:White_shark.jpg by Pterantula / CC-BY-SA 3.0
-140. https://commons.wikimedia.org/wiki/File:Georgia_Aquarium_-_Giant_Grouper_edit.jpg by Diliff / CC-BY-SA 3.0
-141. https://hr.wikipedia.org/wiki/Datoteka:Alligator_gar_fish.jpg by Duane Raver / public domain
-142. https://commons.wikimedia.org/wiki/File:Common_carp.jpg by Duane Raver / public domain
-143. https://commons.wikimedia.org/wiki/File:Goldfisch_1.jpg by Necrophorus / public domain
-144. https://commons.wikimedia.org/wiki/File:Titan_Triggerfish_(or_Giant_Triggerfish,_or_Moustache_Triggerfish),_Balistoides_viridescens_feeding_at_Sataya_Reef,_Red_Sea,_Egypt_-SCUBA_(6395402117).jpg by Derek Keats / CC-BY-SA 2.0
-145. https://commons.wikimedia.org/wiki/File:Squatina_squatina_tenerife2.jpg by Philippe Guillaume / CC-BY-SA 2.0
-146. https://commons.wikimedia.org/wiki/File:Titan_Triggerfish_(or_Giant_Triggerfish,_or_Moustache_Triggerfish),_Balistoides_viridescens_lying_down_for_a_cleaning_at_Elphinstone_Reef,_Red_Sea,_Egypt_-SCUBA_(6194695879).jpg by Derek Keats / CC-BY-SA 2.0
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+2. dam2.jpg: https://commons.wikimedia.org/wiki/File:Bekes-dam_duzzaszto.jpg by László Szalai / public domain
+3. dam3.jpg: https://commons.wikimedia.org/wiki/File:Grand_Coulee_Dam_spillway.jpg by David Brodbeck / CC BY 2.0
+4. dam4.jpg: https://commons.wikimedia.org/wiki/File:Takato_Dam_discharge.jpg by Qurren / CC BY-SA 3.0
+5. dam5.jpg: https://commons.wikimedia.org/wiki/File:Kanjirapuzha_dam_2.JPG by Shijualex / CC BY-SA 3.0
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+8. solar2.jpg: https://commons.wikimedia.org/wiki/File:%22Sungril%22_solar_cooker_photo1.jpg by Fluffyarse / CCO 1.0
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+10. solar4.jpg: https://commons.wikimedia.org/wiki/File:Hybrid_Solar_Energy_System.jpg by ENERGY.GOV / public domain
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+15. windmill.jpg: https://commons.wikimedia.org/wiki/File:Chesterton_Windmill.jpg ny G-Man / Public domain
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+17. windmill2.jpg: https://commons.wikimedia.org/wiki/File:Tuuleveski_Muhul1.jpg by Hendrix / CC BY-SA 3.0
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+
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+5. framingHammer.jpg: https://commons.wikimedia.org/wiki/File:Framing_hammer.jpg by Luigi Zanasi / CC BY-SA 2.0 CA
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+21. nosePlier.jpg: https://commons.wikimedia.org/wiki/File:Western_Forge_Craftsman_Professional_long-nose_pliers.jpg by Typhoon / CC BY-SA 3.0
+22. nosePlier1.jpg: https://commons.wikimedia.org/wiki/File:Needle_nose_pliers.jpg by Dori / Public Domain
+23. nosePlier2.jpg https://commons.wikimedia.org/wiki/File:Long-nosePliers.jpg by Raysonho @ Open Grid Scheduler / CCO 1.0
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+26. plier.jpg: https://commons.wikimedia.org/wiki/File:Plier_electric.jpg by by Baran Ivo / Public Domain
+27. plier1.jpg: https://commons.wikimedia.org/wiki/File:Plier01.jpg by Baran Ivo / Public Domain
+28. plier2.jpg: https://commons.wikimedia.org/wiki/File:Lux_1000V_PP.jpg by Dmitry G / Public domain
+29. scissor.jpg: https://commons.wikimedia.org/wiki/File:Scissors.jpg by Tarquin / CC BY-SA 3.0
+30. scissor1.jpg: https://commons.wikimedia.org/wiki/File:Scissor-for-paper.jpg by Pavel Krok / CC BY-SA 2.5
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+32. scissors.jpg: https://commons.wikimedia.org/wiki/File:Scissor.JPG by Bangin / CC BY-SA 3.0
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+34. screwDriver.jpg: https://commons.wikimedia.org/wiki/File:Screw_driver.jpg by Dmitry G / Public Domain
+35. screwDriver1.jpg: https://commons.wikimedia.org/wiki/File:Pompschroevendraaier_(screw_driver).jpg by Rasbak / CC BY-SA 3.0
+36. screwDriver2.jpg: https://commons.wikimedia.org/wiki/File:Torque-screw-driver.jpg by Dezertscorpion / Public domain
+37. screwDriver4.jpg: https://commons.wikimedia.org/wiki/File:Screw_Driver_display.jpg by Fvb981 / CC BY-SA 3.0
+38. sickle.jpg: https://commons.wikimedia.org/wiki/File:Stainless_Steel_Sickle.jpg by Nikunjbhaldoi / CC BY-SA 4.0
+39. sideCutter.jpg: https://commons.wikimedia.org/wiki/File:Carbon_steel_diagonal_side_cutters.jpg by M338 / public domain
+40. sprinkler.jpg: https://commons.wikimedia.org/wiki/File:Wikibooks_planting-water.jpg by Theornamentalist / CC BY-SA 3.0
+41. stripper1.jpg: https://commons.wikimedia.org/wiki/File:Blue_wire_stripper.png by MehranVB / CC BY-SA 3.0
+42. tweezer.jpg: https://commons.wikimedia.org/wiki/File:Tweezer.jpg by Swathysuren / CC BY-SA 4.0
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+45. wrench1.jpg: https://commons.wikimedia.org/wiki/File:Adjustable_wrench.jpg by Dori / public domain