Vision animal

Alkenes with many double bonds in a row are colored. Some plant pigments are alkenes of this kind. One example is )S-carotene, which gives carrots their distinctive orange color. Animals break down )S-carotene into vitamin A, which is essential for vision. Xanthin molecules, relatives of j6-carotene that contain oxygen atoms, occur in com, orange juice, and shellfish. The xanthin below makes the flamingo pink. 

Harpur, Patrick. Daimonic reality a field guide to the other world. Viking, 1994 reprint, London, New York Arkana, 1995. xxi, 330 p. ISBN 0-14-019485-1 "Mysterious lights in the sky, phantom animals, visions of the Virgin Mary, UFO s, fairies, alien abductions Daimonic Reality makes sense of these apparitions and... 

Vitamin A deficiency affects more than 100 million children around the world (Miller and others 2002) and thus remains an important public health problem in many countries. Vitamin A is essential for vision, reproduction, growth, immune function, and general health of humans (van Lieshout and others 2001). The major sources of vitamin A in the human diet are retinyl esters (preformed vitamin A) found in foods of animal origin and provitamin A carotenoids from fruits and vegetables. Unfortunately, foods containing preformed vitamin A (meat, milk, eggs, etc.) are frequently too expensive for some economically deprived developing countries, and therefore dietary carotenoids are the main source of vitamin A in these countries. 

Chronic exposure to GD causes forgetfulness, thinking difficulty, vision disturbances, muscular aches/pains. Although certain organophosphate pesticides have been shown to be teratogenic in animals, these effects have not been documented in carefully controlled toxicological evaluations for GD. 

Transactions between plants and pollinators go back millions of years and vary greatly from species to species, but they all have certain features in common. A plant s goal is to coax pollinators to call upon its flowers, so the animal can both pick up local pollen grains and leave pollen it has brought from afar. To attract attention, plants advertise their presence with color and fragrance. Taking advantage of pollinators color vision, their flowers have... 

See also individuality, biochemical as an enemy, 204-206 blood differences, 3-4 deviates, 6-7 normal ranges and, 2-4 quantitative research and, 204, 205 research into, 7 vertebral anatomy, 45 vision, 202-203 vitamin A, 162-166, 169, 199 animal studies, 163-164 growth rate relationship to intake of, 166f human needs award contest, 162-163... 

I. Gazit and J. Terkel, Domination of olfaction over vision in explosives detection by dogs , Appl. Anim. Behav. Sci. 82 (2003) 65—73. 

Vitamin A (retinol) Animal tissue, liver, green plants Component of the pigment involved in vision... 

Zinc is an important trace element required for all healthy plants and animals. Zinc is found in proteins, such as meats, fish, eggs, and milk. About 10 to 15 miUigrams of zinc is required per day, and it may be taken as a dietary supplement. Zinc helps the blood in our bodies move the waste gas—carbon dioxide—to the lungs and helps prevent macular degeneration (loss of vision). 

Drummond, H. (1985). The role of vision in the predatory behavior of natricine snakes. Animal Behaviour 33,206-215. 

Excess selenium intake can occur in both animals and humans living in areas with elevated selenium in the soil. Most grass and grains do not accumulate selenium, but when an animal consumes plants that do accumulate selenium (some up to 10,000 mg/kg) they can develop a condition called the blind staggers . Symptoms include depressed appetite, impaired vision, and staggering in circles and can ultimately lead to paralysis and death. Humans are susceptible to similar effects as well as additional neurological effects. Selenium deficiency results in heart disorders, skeletal muscle effects, and liver damage. 

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