Give 2 example of sedimentation and devastation from daily life ?
Answers
sediments in the aquatic ecosystem are analogous to soil in the terrestrial ecosystem as they are the source of substrate nutrients, and micro- and macroflora and -fauna that are the basis of support to living aquatic resources. Sediments are the key catalysts of environmental food cycles and the dynamics of water quality. Aquatic sediments are derived from and composed of natural physical, chemical, and biological components generally related to their watersheds.
Sediments range in particle distribution from micron-sized clay particles through silt, sand, gravel, rock, and boulders. Sediments originate from bed load transport , beach and bank erosion, and land runoff. They are naturally sorted by size through prevalent hydrodynamic conditions . In general, fast-moving water will contain coarse-grained sediments and quiescent water will contain fine-grained sediments. Mineralogical characteristics of sediments vary widely and reflect watershed characteristics. Organic material in sediments is derived from the decomposed tissues of plants and animals, from aquatic and terrestrial sources, and from various point and nonpoint wastewater discharges. The content of organic matter increases in concentration as the size of sediment mineral particles decreases. Dissolved chemicals in the overlying and sediment pore waters are a product of inorganic and organic sedimentary materials, as well as runoff and ground water that range from fresh to marine in salinity. This sediment/water environment varies significantly over space and time and its characteristics are driven by complex biogeochemical interaction between the inorganic, living, and nonliving organic components. The sediment biotic community includes micro-, meso-, and macrofauna and -flora that are interdependent of each other and their host sediment's biogeochemical characteristics.
Sedimentation is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity. The particles that settle out from the suspension become sediment, and in water treatment is known as sludge.
River water gets muddy when it rains. After a day or two it gets clear. This is a classic example of sedimentation.
It's also used informally to mean incredibly affecting or impressive, like a photographer's devastating images of urban poverty. This meaning came into use in the late 1800s — before that, devastating came right from the Latin word devastare, "to lay waste completely."
Scientists are documenting the effects of these and other climate-related shifts, which largely stem from global warming caused by humans and are already affecting daily life. In fact, 2016 was the hottest year on record. Global warming is an example of a devastating event affecting everyday life.