(Determination of Age and Life) ~ Ayushya Karma

He who has earned the Ayushya (age) Karma of the Devagathi (divine world), becomes an angel or a Deva. He who has earned the Ayushya Karma of the Manushya Gathi (mankind), becomes a human being. He who has earned the Ayushya Karma of theTiryancha Gathi (world of birds, animals, plants)becomes a bird or an animal or a plant. He who has earned the Ayushya Karma of the Naraka Gathi (hell), goes to hell. He who strictly follows the discipline and rules of religion, earns the life of a Deva, He who is charitable, merciful and performs the religious activities, earns the life of a human being.He who cheats and deceives others, earns the life of a bird or an animal or a plant. He who is violent, criminal and kills another, goes to Hell.Owing to this Karma one has to be born, has to live and die in this world. The age limit in the next birth is determined in this life.Once it is fixed it cannot be changed.One has to be born in the next life only in that world as determined by Ayushya Karma.One has to live there for the period fixed by Ayushya Karma and then die.So goes the cycle of birlh and death.

Source :- http://jainarticles.com/index.php?option=com_content&view=article&id=148:ayushya-karma-determination-of-age-and-life&catid=38:childrens-science-of-karmameaning-of-8asta-karm&Itemid=1

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Jeevraksha ~ kolkata

Chyavan Places	Birth Places	Diksha	Keval	Nirvan	Tirthankar's No. 1 to 24	Tirth Places
					1, 2, 4, 5, 14	Ayodhya, Uttar Pradesh
					3	Srawasti, Uttar Pradesh
					6	Kausambi, Uttar Pradesh
					7	Shri Bhadeni Tirth, Uttar Pradesh
					8	Chandrapuri Tirth, Uttar Pradesh
					9	Kaakandi Tirth, Bihar
					10	Bhadilpur
					11	Sinhpuri Tirth, Uttar Pradesh
					12	Champa Puri Tirth, Bihar
					13	Kampilla
					15	Ratnapuri tirth, Uttar Pradesh
					16.17,18	Hastinapur
					19,21	Mithila
					20	Rajgruhi
					22	Sauripur Tirtha, Uttar Pradesh
					23	Bhelupur Jain Tirth, Uttar Pradesh
					24	Ksatriya Kund Tirth, Bihar
					2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23	Sametashikhara Tirth, Bihar
					22	Girnar Tirth, Gujarat
					24	Pavapuri Tirtha, Bihar
					1	Purimtaal Tirth, Uttar Pradesh
					24	Rijubaluka Tirth, Bihar
					1	Shri Astapad Tirth, Himalaya