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.
Geography. The capital of Senegal, Dakar, is the westernmost point in Africa. The country, slightly smaller than South Dakota, surrounds Gambia on three sides and is bordered on the north by Mauritania, on the east by Mali, and on the south by Guinea and Guinea-Bissau.enegal is mainly a low-lying country, with a semidesert area in the north and northeast and forests in the southwest. The largest rivers include the Senegal in the north and the Casamance in the southern tropical climate region.