We don’t know much about the rise of Rapa Nui’s population. We know only that first polynesian populations arrived around 800 b.c. and the peak of population arrived around 1200 b.c., the reason of the big population is of a lot of resaurces. Because of the limited resources and for meteorogical phenomenoms, the population had many rises and many declines. The resources were the fish and agriculture: agriculture was never been prosperous on the island, fishing was preferred to agriculture, but in the years, this resources started to be less when the atmospherical phenomenom El Niño arrived. It consists in rising the temperature of the pacific ocean, so that crops couldn’t grow and types of fishes went away from the island. Than, in 2000 AD people went away definitelly from the island because of letal illnesses like smallpox that still nowdays, we can’t cure. Another reason is that the construction of moai realy big statues that needed a lot of space so it led them to deforestation and this encreased pressure on the enviroment and it ended that there were no resaurces