Evolution of human colour vision that are found between 450 and 625. Individuals with various forms of colour blindness such as deuteranopia and protanopia are missing human middle wavelength sensitive or long wavelength sensitive opsins. Their minimum wavelength differences are <5 but only at around 500. Protanopes, who are missing long wavelength sensitive cones, are unable to distinguish between colours in the green-yellow-red section of the electromagnetic spectrum. They find yellow, red and orange colours to have much lower brightness when compared to a trichromat. The dimming of these colours can result in confusion in many cases, such as when attempting to identify red traffic
The Ear, the Eye and the Arm in a fortified mansion to ensure their security. Seeking adventure to earn the Scout Badge, they escape the house with the help of the Mellower, a praise singer employed by their parents. The children then find themselves in the busy streets of Mbare Musika, where they are kidnapped and taken to Dead Man's Vlei, the lair of the She Elephant. There, they have to work in the plastic mines. Their parents enlist the help of the Ear, the Eye, and the Arm, three mutant detectives from a slum named the Cow's Guts. Ear has sensitive hearing; Eye has sensitive vision;