A foetus shown at six and at seven months. Coloured engraving, 1818. https://www.rawpixel.com/image/13961414/foetus-shown-six-and-seven-months-coloured-engraving-1818Free Image from public domain licenseNative American farmer and retired teacher Jerri Parker grew up on in agriculture, but now she operates her diversified farm… https://www.rawpixel.com/image/3259862/free-photo-image-animal-bird-chickenFree Image from public domain licenseMonarch on obedient plantPhoto by Mike Budd/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028296/photo-image-flower-plant-beeFree Image from public domain licenseYoung Prothonotary WarblerPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4029111/photo-image-bird-summer-natureFree Image from public domain licenseWild Geese (1905) painting in high resolution by Bruno Liljefors . Original from The Thiel Gallery. https://www.rawpixel.com/image/7724675/image-art-public-domain-natureFree Image from public domain licenseA snake-like reptile with legs. Etching by J. Heath after G. Shaw. https://www.rawpixel.com/image/13988379/snake-like-reptile-with-legs-etching-heath-after-shawFree Image from public domain licenseTimber RattlesnakePhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4029126/photo-image-nature-snakeFree Image from public domain licenseBrown Beauty by Jeff Slade2009 photo contest winner for the Fisheries & Water category. Photo by Jeff Slade/USFWS.This photo… https://www.rawpixel.com/image/4028356/photo-image-water-fishFree Image from public domain license