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  1. Close-Up Of A Maturing Cannabis Plant And Flower With Visible Trichomes, California
  2. Nerve Cells, Light Micrograph
  3. Brown Bear, Grizzly Bear, Sow With Cubs, Katmai National Park, Alaskan Peninsula
  4. Limescale, SEM
  5. The Getaway, German Poster Art, 1972
  6. Spirit bear, kermode, black bear, sow, British Columbia coast, Canada
  7. Bald Eagle silhouette at sunset in Katchemack Bay, Alaska
  8. Oregon. Columnar basalt covered with lichen along North Umpqua River
  9. Sugar Crystals, SEM
  10. An adult mountain Barbary bighorn sheep forages high in the Guadalupe Mountains.
  11. Asparagine Crystals, Light Micrograph
  12. Spirit bear, kermode, black bear, sow, British Columbia coast, Canada
  13. Spirit bear, kermode, black bear, sow, British Columbia coast, Canada
  14. Brown bear footprints, Katmai National Park, Alaskan peninsula
  15. Caribou with Mount McKinley, Denali National Park, Interior, Alaska
  16. Sugar Crystals, SEM
  17. Brown bear, spring cubs, Katmai National Park, Alaskan peninsula
  18. Intricate formations in the wondrous, Carlsbad Caverns National Park, New Mexico
  19. Sugar Crystals, SEM
  20. Spirit bear, kermode, black bear, sow, British Columbia coast, Canada
  21. Mountain Goat kids at Exit Glacier, Kenai Fjords National Park, Alaska
  22. Spirit bear, black bear, sow walking on a log, central British Columbia coast, Canada
  23. Handmade Musical Instruments, Chania, Crete, Greece
  24. Dall sheep ram resting on Mount Margaret, Denali National Park, Interior, Alaska
  25. Dall sheep rams on Mount Margaret, Denali National Park, interior of Alaska
  26. Ox Horn, Polarised Light Microscopy
  27. Spirit bear, black bear, sow walking, British Columbia coast, Canada
  28. Oregon, Portland. Evening light on glass towers of the Oregon Convention Center
  29. Oregon, Portland. Sunlight casts shadows through hazelnut trees and dust in orchard
  30. Dall sheep ewe on Mount Margaret, Denali National Park, Interior, Alaska
  31. Grizzly bear, with rare blond bear, Katmai National Park, Alaskan peninsula
  32. Dall sheep pair foraging on a snow-covered hillside in Denali National Park, Alaska
  33. Spirit bear, Kermode, sow with cub looking for salmon, central British Columbia coast
  34. Spirit bear, black bear, sow and cub walking on a log, British Columbia Coast, Canada
  35. Polar Bear Sow With Newborn Spring Cubs, Canning River, Alaska
  36. Diatom Diversity, SEM
  37. Polar Bears sleeping on the pack ice, Arctic National Wildlife Refuge, Alaska
  38. Blood Smear, Light Micrograph
  39. Spirit bear, black bear, sow with cub walking on log, British Columbia, Canada
  40. Dall sheep ram and ewe on Mount Margaret, Denali National Park, Interior, Alaska
  41. Colourful alleyway and entrance to Taverna Larenzo, Rethymnon Old Town, Crete, Greece
  42. Phosphate Crystal, SEM
  43. Diatom Diversity, SEM
  44. Polar Bear Sow, Canning River, Eastern Arctic National Wildlife Refuge, Alaska
  45. Spirit bear, kermode, black bear, sow with cubs, British Columbia coast, Canada
  46. Polar bear on the pack ice, 1002 area of the Arctic National Wildlife Refuge, Alaska
  47. Scenic View Of Alaska Range And Kantishna Wilderness Trail In Denali National Park
  48. Oral Bacteria, SEM