Why is Arctic sea ice important? Arctic sea ice keeps the polar regions cool and helps moderate global climate. Sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. As sea ice melts in the summer, it exposes the dark ocean surface.
Lipodystrophy is a medical condition characterized by abnormal or degenerative conditions of the body's adipose tissue. lipodystrophy can be a lump or small dent in the skin that forms when a person performs injections repeatedly in the same spot.
Leukodystrophy (from the Greek words leukos:white and dystrophia: faulty development, degeneration) has come to mean a genetic metabolic disorder of the white matter. In leukodystrophies, myelin may be absent or decreased, of an abnormal structure, and unstable. Normal myelination may not be attained and what myelin is formed may break down. Some leukodystrophies affect myelin and myelin producing cells directly.