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Photo Credits
- 1. (c) CARLOS VELAZCO, some rights reserved (CC BY-NC), uploaded by CARLOS VELAZCO
- 2. (c) Bob O'Kennon, some rights reserved (CC BY-NC), uploaded by Bob O'Kennon
- 3. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
- 4. (c) Homer Edward Price, some rights reserved (CC BY)
- 5. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 6. (c) CompanyInk, some rights reserved (CC BY-NC), uploaded by CompanyInk
- 7. (c) blake hendon, some rights reserved (CC BY-NC), uploaded by blake hendon
- 8. (c) Zona Sujeta a Conservación Ecológica Sierra de Zapalinamé, some rights reserved (CC BY-NC), uploaded by Zona Sujeta a Conservación Ecológica Sierra de Zapalinamé
- 9. (c) Anita363, some rights reserved (CC BY-NC)
- 10. (c) Chuck Sexton, some rights reserved (CC BY-NC), uploaded by Chuck Sexton
- 11. (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist
- 12. (c) Bruce B Missen, some rights reserved (CC BY-NC), uploaded by Bruce B Missen
- 13. (c) lucio101, some rights reserved (CC BY-NC)
- 14. (c) Richard Reynolds, some rights reserved (CC BY-NC), uploaded by Richard Reynolds
- 15. (c) cwhiting, some rights reserved (CC BY-NC), uploaded by cwhiting
- 16. (c) Laura Clark, some rights reserved (CC BY), uploaded by Laura Clark
- 17. (c) rockybranch, some rights reserved (CC BY-NC), uploaded by rockybranch
- 18. (c) Minnette Marr, some rights reserved (CC BY-NC), uploaded by Minnette Marr
- 19. (c) Steven J. Baskauf, some rights reserved (CC BY)
- 20. (c) Susan J. Hewitt, some rights reserved (CC BY-NC), uploaded by Susan J. Hewitt
- 21. (c) trees, some rights reserved (CC BY-NC)
- 22. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 23. (c) Kimberlie Sasan, some rights reserved (CC BY-ND), uploaded by Kimberlie Sasan
- 24. (c) Alex Abair, some rights reserved (CC BY-NC), uploaded by Alex Abair
- 25. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 26. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 27. (c) Cat Chang, some rights reserved (CC BY-NC), uploaded by Cat Chang
- 28. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
- 29. (c) trevko, some rights reserved (CC BY-NC), uploaded by trevko
- 30. (c) conabio_bancodeimagenes, some rights reserved (CC BY-NC-ND), uploaded by conabio_bancodeimagenes
- 31. (c) Anna Livia Singer, some rights reserved (CC BY-NC-ND), uploaded by Anna Livia Singer
- 32. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 33. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 34. (c) Katja Schulz, some rights reserved (CC BY)
- 35. (c) Lee Hoy, some rights reserved (CC BY-NC-ND), uploaded by Lee Hoy
- 36. (c) Michael D Fox, some rights reserved (CC BY), uploaded by Michael D Fox
- 37. (c) 116916927065934112165, some rights reserved (CC BY), uploaded by 116916927065934112165
- 38. (c) dbarronoss, some rights reserved (CC BY-NC-ND)
- 39. (c) Liu JimFood, some rights reserved (CC BY-NC), uploaded by Liu JimFood
- 40. (c) rloera, some rights reserved (CC BY-NC)
- 41. (c) Joshua Ekrut, some rights reserved (CC BY-NC-SA), uploaded by Joshua Ekrut
- 42. (c) Dguendel, some rights reserved (CC BY)
- 43. (c) Mark Kluge, some rights reserved (CC BY-NC), uploaded by Mark Kluge
- 44. (c) Alyssa Russell, some rights reserved (CC BY-NC), uploaded by Alyssa Russell
- 45. (c) Jason Sharp, some rights reserved (CC BY-NC-SA), uploaded by Jason Sharp
- 46. (c) Bas Kers, some rights reserved (CC BY-NC-SA)
- 47. (c) krancmm, some rights reserved (CC BY-NC), uploaded by krancmm
- 48. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 49. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
- 50. (c) Joan Knapp, some rights reserved (CC BY-ND), uploaded by Joan Knapp
- 51. (c) Forest and Kim Starr, some rights reserved (CC BY)
- 52. (c) George F Mayfield, some rights reserved (CC BY-SA)
- 53. (c) Suzanne Cadwell, some rights reserved (CC BY-NC), uploaded by Suzanne Cadwell
- 54. (c) Nancye Saunders Drukker, some rights reserved (CC BY-NC-ND), uploaded by Nancye Saunders Drukker
- 55. (c) Alison Northup, some rights reserved (CC BY), uploaded by Alison Northup
- 56. (c) Melissa McMasters, some rights reserved (CC BY)
- 57. (c) Michelle, some rights reserved (CC BY), uploaded by Michelle
- 58. (c) Paweł Pieluszyński, some rights reserved (CC BY-NC), uploaded by Paweł Pieluszyński
- 59. (c) C. Mallory, some rights reserved (CC BY-NC), uploaded by C. Mallory
- 60. (c) Steven Severinghaus, some rights reserved (CC BY-NC-SA)
- 61. (c) Svetlana Nesterova, some rights reserved (CC BY-NC), uploaded by Svetlana Nesterova
- 62. (c) Matthew Allen, some rights reserved (CC BY-NC), uploaded by Matthew Allen
- 63. (c) piel, some rights reserved (CC BY-NC)
- 64. (c) Diana-Terry Hibbitts, some rights reserved (CC BY-NC), uploaded by Diana-Terry Hibbitts
- 65. (c) Kenneth Bader, some rights reserved (CC BY-NC), uploaded by Kenneth Bader
- 66. (c) Adriana Nelly Correa Sandoval, some rights reserved (CC BY), uploaded by Adriana Nelly Correa Sandoval
- 67. (c) Flickr, some rights reserved (CC BY-NC)
- 68. (c) Lee Ann Linam Science Labs, some rights reserved (CC BY-NC), uploaded by Lee Ann Linam Science Labs
- 69. (c) Juan Cruzado Cortés, some rights reserved (CC BY-SA), uploaded by Juan Cruzado Cortés
- 70. (c) Bryan, some rights reserved (CC BY-NC), uploaded by Bryan
- 71. (c) fra298, some rights reserved (CC BY-NC-ND)
- 72. (c) Mark Fishbein, some rights reserved (CC BY-NC), uploaded by Mark Fishbein
- 73. (c) CK Kelly, some rights reserved (CC BY), uploaded by CK Kelly
- 74. (c) Curren Frasch, some rights reserved (CC BY-NC), uploaded by Curren Frasch
- 75. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 76. (c) John Rusk, some rights reserved (CC BY)
- 77. (c) Judy Gallagher, some rights reserved (CC BY-SA), uploaded by Judy Gallagher
- 78. no rights reserved, uploaded by 葉子
- 79. (c) Randy A Nonenmacher, some rights reserved (CC BY), uploaded by Randy A Nonenmacher
- 80. (c) Douglas Goldman, some rights reserved (CC BY), uploaded by Douglas Goldman
- 81. no rights reserved
