Physocarpus opulifolius 2, Ninebark, flower inflorescence, Green Farmacy Garden, Howard Co, Md, H Metzman https://www.rawpixel.com/image/8756617/photo-image-flower-plant-public-domainFree Image from public domain licenseSkipper butterflyPale purple coneflower with skipper butterfly. Photo by Rick Hansen/USFWS. Original public domain image… https://www.rawpixel.com/image/4029207/photo-image-flower-plant-beeFree Image from public domain licensePigs' teeth: seven figures showing the stages of development in pigs of different ages. Coloured etching, ca. 1860. https://www.rawpixel.com/image/13987817/image-animal-public-domain-foodFree Image from public domain licenseAndreae Vesalii Bruxellensis, scholae medicorum Patauinae professoris De humani corporis fabrica libri septem. https://www.rawpixel.com/image/14018197/image-paper-person-bookFree Image from public domain licensePortal vein (fig. 2); spinal cord (figs 3-4) after Huber. Engraving by Benard, late 18th century. https://www.rawpixel.com/image/13989074/image-plant-art-animalFree Image from public domain licenseEmbleem: maagd (1723) by Jan Goeree, Jan Goeree, Gerard onder de Linden and Johannes van Braam https://www.rawpixel.com/image/13782275/image-paper-cartoon-faceFree Image from public domain licenseMikroskopische Untersuchungen über die Uebereinstimmung in der Struktur und dem Wachsthum der Thiere und Pflanzen / Von Th.… https://www.rawpixel.com/image/13997042/image-paper-cartoon-artFree Image from public domain licenseSchotel van veelkleurig beschilderde faience (c. 1730 - c. 1770) by anonymous https://www.rawpixel.com/image/13746152/schotel-van-veelkleurig-beschilderde-faience-c-1730-1770-anonymousFree Image from public domain licenseLe Servari a quatre cordes d’acier Arabe et tambour arabe (in or before 1828) by Pierre Félix van Doren https://www.rawpixel.com/image/13793914/image-paper-cartoon-trophyFree Image from public domain licenseAmara confusa (side view)NPS / Christine Mire & EvansUSA: Wyoming, Park County:Yellowstone NP, MammothPitfall Trap Ele.… https://www.rawpixel.com/image/4038143/photo-image-bee-animalFree Image from public domain licenseWeevilPhoto by Erik ObergUSA: Wyoming, Park CountyYellowstone NP MAMMEle. 1856m, Pitfall Trap23 August - 06 September… https://www.rawpixel.com/image/4038479/photo-image-animal-public-domainFree Image from public domain licenseHazel twig (Corylus avellana) with an associated insect and its anatomical segments. Coloured etching, c. 1831. https://www.rawpixel.com/image/13984546/image-cartoon-plants-artFree Image from public domain licenseRavne pri Zdolah.. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3337453/free-photo-image-andrena-animal-apiaceaeFree Image from public domain licenseTiger salamanderTiger salamanders are on the move at St. Croix Wetland Management District in Wisconsin! This one was… https://www.rawpixel.com/image/4029109/photo-image-bee-summer-autumnFree Image from public domain licenseStarry False Solomon's Seal - Maianthemum stellatum. Original public domain image from Flickr https://www.rawpixel.com/image/3309791/free-photo-image-acanthaceae-amaryllidaceae-animalFree Image from public domain licenseThe pelvis in pregnancy. Lithograph after W. F. Victor Bonney. https://www.rawpixel.com/image/13997436/the-pelvis-pregnancy-lithograph-after-victor-bonneyFree Image from public domain licenseTriepeolus pectoralis, F, face, Massachusetts, Suffolk, Great Brewster Island https://www.rawpixel.com/image/8756564/photo-image-public-domain-bees-eyesFree Image from public domain licenseHoney bee on slender white prairie clover at Bridger Plant Materials Center. Summer 2007. Original public domain image from… https://www.rawpixel.com/image/3335205/free-photo-image-andrena-animal-apiaceaeFree Image from public domain license