The veins are responsible for transferring blood lacking oxygen, but full of waste materials from the legs to the heart. (compressioncarl.com)
He said that the dealers in this market receive waste material from across the country. (treehugger.com)
The intestines break down food so that the body can absorb needed nutrients while leaving the junk inside the gut to be passed as waste material. (dogsnaturallymagazine.com)