Symptom - A subjective indication of the presence of disease or a departure from the body’s normal state of functioning. ⏎
Suburbanization - The process of land conversion and development around the periphery of major cities.⏎
Transition Zone - The area, sometimes referred to as an ecotone, encompassing the edges of two distinct ecosystems, such as the area where a forest intersects with grassland.⏎
Sperm Cell - The male gamete, or sex cell, which carries the hereditary material of the male parent and unites with the female egg cell during sexual reproduction.⏎
Sterilization - The process of destroying all forms of life, including infectious agents, from a surface, fluid, or biological medium with the use of heat, chemicals, irradiation, high pressure, filtration, or some combination of these methods.⏎