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The mean chain length of an entire web is the arithmetic average of the lengths of all chains in a food web. [ 42 ] [ 14 ] In a simple predator-prey example, a deer is one step removed from the plants it eats (chain length = 1) and a wolf that eats the deer is two steps removed from the plants (chain length = 2).
Food fortification is the addition of micronutrients (essential trace elements and vitamins) to food products. Food enrichment specifically means adding back nutrients lost during food processing, while fortification includes adding nutrients not naturally present. [ 1 ]
Enriched flour is flour with specific nutrients added to it. These nutrients include iron and B vitamins (folic acid, riboflavin, niacin, and thiamine). Calcium may also be supplemented. The purpose of enriching flour is to replenish the nutrients in the flour to match the nutritional status of the unrefined product.
Enriched category, in mathematics; Chaptalization, a process in winemaking; Food fortification, the process of adding nutrients to cereals or grain; Enrichment in education, activities outside the formal curriculum; Enrichment of breathing gas for scuba diving (e.g. in Enriched Air Nitrox)
White rice is often enriched with some of the nutrients stripped from it during its processing. [2] Enrichment of white rice with B 1 , B 3 , and iron is required by law in the United States when distributed by government programs to schools, nonprofits, or foreign countries.
Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...
A similar bill was introduced in South Carolina to name it the official state food, [11] but it did not advance. [12] Nevertheless, South Carolina still has an entire chapter of legislation dealing exclusively with corn meal and grits. [13] State law in South Carolina requires grits and rice meal to be enriched, similar to the requirement for ...
The δ15N isotopic signature is enriched up the food web. [4] [5] A predator will have a higher δ15N as compared to its prey. This trend allows the trophic position of an organism to be derived. Coupled to the concentration of a specific pollutant, such as mercury, the concentration verses trophic position can be accessed.