The Right Answer Is Exoskeleton.
Seismicity along divergent plate boundaries is concentrated along rocky areas away from the rift zones.
An oceanic ridge marks divergent plate boundaries in the ocean basins. It is broad, fractured swell with a total length of 70,000 km. Basaltic volcanism and shallow earth quakes are concentrated along the rift zone at the ridge crest. The ridge's characteristics depend upon the spreading rate.
The human eye has three types of cone cells. These cones respond to the light and its varying signals wavelengths determines how the brain will perceive the lights signals and determine the colors the person sees.
Damage to any one of the types of cone cells doesn't cause total blindness because they have independent structure and are parallel to each other. Instead, damage to any one of the types of cone may cause COLOR BLINDNESS.
