Iron supplements treat and prevent iron deficiency anemia. Available in oral, intravenous, and muscle injection forms. Iron pills have been used since 1681. Ferrous salts are on WHO's Essential Medicines list
Arctic Fox is most popular, African Elephant least popular. List includes animals from all shapes and sizes worldwide
Fordyce spots are harmless sebaceous glands appearing as white/yellow bumps. First described by John Addison Fordyce in 1896. Present in approximately 80% of adults. More common in males and appear around age 3
Grains are seeds of grasses cultivated for food worldwide. Fresh grains are higher in water but have shorter shelf life. Whole grains contain bran, endosperm, and germ layers
1 year equals 365.2425 days. Conversion formula: days = years × 365. Example: 3 years equals 1,095 days
Melanin determines skin, hair, and eye pigmentation. Melanocytes produce melanin in hair, skin, eyes, and brain. Three main types: eumelanin, neuromelanin, and pheomelanin