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.
It is the westernmost country in the mainland of the Old World or Eurafrasia and owes its name to the Senegal SÃ©nÃ©gal river that borders it to the east and. North senegal covers a land area of 197,000 197000 square (76,000 76000 sq), mi and has an estimated population of about 13. millionike 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.