Even though sound waves in water and sound waves in air are basically similar, the way that sound levels in water and sound levels in air are reported is very different, and comparing sound levels in water and air must be done carefully.
Melanocytes are found in the stratum basale layer. About 1 in every 5 to 10 cells in this layer is a melanocyte. Melanocyte number is the same in all races. In different races, the number of melanocytes is THE SAME. In light skinned people, the melanin is concentrated deep in the epidermis, particularly in the stratum basale layer. Differences in skin colour depend on how much melanin is produced, the size of the melanosomes, and the degree to which they agregate.
Oligodendrocyte cells are found in the Central Nervous System (CNS), that is in the tissues of the Brain and Spinal Cord. : Oligodendrocytes differ from astrocytes (listed higher-up this page) by having fewer and thinner processes and no gap junctions. : 1  Forms supporting network around CNS neurons.ligodendrocyte cells are found in the Central Nervous System (CNS), that is in the tissues of the Brain and Spinal Cord. : Oligodendrocytes differ from astrocytes (listed higher-up this page) by having fewer and thinner processes and no gap junctions. : 1  Forms supporting network around CNS neurons.