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Nutrient cycling is the movement of nutrients through an ecosystem by biotic and abiotic processes. [26] The ocean is a vast storage pool for these nutrients, such as carbon, nitrogen and phosphorus. The nutrients are absorbed by the basic organisms of the marine food web and are thus transferred from one organism to the other and from one ...
Cycling, [1] also known as bicycling [2] or biking, [3] is the activity of riding a bicycle or other types of pedal-driven human-powered vehicles such as balance bikes, unicycles, tricycles, and quadricycles. Cycling is practised around the world for purposes including transport, recreation, exercise, and competitive sport.
Utility cycling encompasses any cycling done simply as a means of transport rather than as a sport or leisure activity. It is the original and most common type of cycling in the world. [1] Cycling mobility is one of the various types of private transport and a major part of individual mobility.
An environmental disaster or ecological disaster is defined as a catastrophic event regarding the natural environment that is due to human activity. [2] This point distinguishes environmental disasters from other disturbances such as natural disasters and intentional acts of war such as nuclear bombings .
The urban bicycle, one of the most widespread and well-known vehicles for active mobility. Active mobility, soft mobility, active travel, active transport or active transportation is the transport of people or goods, through non-motorized means, based around human physical activity. [1]
The title given to the best climber in a cycling road race. Also known as Gran Premio della Montagna (GPM) in Italian cycling. On the ride-tracking web site Strava, usually abbreviated as KOM: The fastest rider on any segment whether uphill, downhill or flat. Kit A group, plus everything else a frameset needs to make a complete bicycle. [55] Kite
Besides advocating for greater safety, comfort, and convenience for bicyclists, many members of the industry promote bicycles for poverty alleviation.Experiments done in Africa (Uganda and Tanzania) and Sri Lanka on hundreds of households have shown that a bicycle can increase the income of a poor family by as much as 35%.
Ecosystem classifications are specific kinds of ecological classifications that consider all four elements of the definition of ecosystems: a biotic component, an abiotic complex, the interactions between and within them, and the physical space they occupy. Biotic factors of the ecosystem are living things; such as plants, animals, and bacteria ...