Careers in Veterinary Medicine Become a veterinarian and make a difference. Embark on an exciting career path in veterinary medicine, where you can put your knowledge and compassion into practice. Preventing disease and healing animals is at the heart of what veterinarians do. But they also do so much more.
The simple reason behind Marsâs reddish appearance is the layer of iron oxide dust covering the planetâs surface. Fine particles of various oxides of iron (hematite) and trace amounts of some elements like chlorine and sulfur on the Marâs surface is the main reason for its reddish color.
Poo gets its typical brown color from bile, a greenish emulsifier that's secreted by your liver and gallbladder to aid in the digestion of fats. Bile needs to spend several hours in the colon to develop this color, which means that poos passing through too quickly may retain the greenish hue.