1. Turn the seastar over to its ventral or oral surface (underside). 2. Locate the mouth in the center of the central disc. Find the ring of oral spines surrounding the mouth. 3. Find the groove that extends down the underside of each arm. This is called the ambulacral groove.. Locate the central disc in the center of the seastar. Locate the small, round hard plate called the madreporite on top of the central disc. Water enters through this into the water vascular system.
Lyon or (more archaically) Lyons (UK /liËËÉn/ or /ËliËÉn/; French pronunciation: [ljÉÌ], locally: [lijÉÌ]; Arpitan: Liyon [ÊjÉÌ]) is a city in east-central France, in the Auvergne-RhÃ´ne-Alpes region, about 470 km (292 mi) from Paris and 320 km (199 mi) from Marseille. Inhabitants of the city are called Lyonnais.
Paris (2.2 million) The wider Paris urban area had a population of over 12.1 million in 2013. Marseille (853,000) While it's the second largest city in France, it has the third largest urban and metropolitan area with a population of 1.6 million.Lyon (484,000) Including suburbs and satellite towns, Lyon is the most populous area of France with a population of 1.7 million.oulouse (449,000) This is the fourth largest metropolitan area of France with a population of 1.2 million. Metropolitan France is expected to see a population that grows by another 9 million people over the next 40 years, placing the country's population around 72 million by 2050.