Why is Easter Island treeless?

Answer 1

There are various explanations and theories for the almost-entirely treeless state of Easter Island.

Climatic effects and deforestation and farming by humans are two explanations; the link below gives more information about Easter Island and its ecology.

Answer --> Originally, it is not treeless. It was shown by archaeologist that trees such as Paschalococos, Alphitonia zizyphoides and Eleaocarpus rarotongensis use to be abundant. But as local population grew (to estimated 15,000), overharvesting becomes a problem. This coupled with rat predation and climate change leads to the island being largely deforested.