Carotenoids are organic pigments that are found in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms, including some bacteria and some fungi. Carotenoids can be produced from fats and other basic organic metabolic building blocks by all these organisms.
   Senegal is a republic with a presidency; the president is elected  every five years as of 2001, previously being seven years, by adult  â¦ voters.
Senegal's capital of Dakar is by far the largest city in Senegal, with over two million residents. The second most populous city is Touba, a de jure communaute rurale (rural community), with half a million.ike most African nations, agriculture is a major sector, with Senegal producing several important cash crops, including peanuts, sugarcane, cotton, green beans, tomatoes, melons, and mangoes. Owing to its relative stability, tourism and hospitality are also burgeoning sectors.