1. The shanties and huts are very flimsy and normally extremely thin and made of burnable materials. All this together does not make for a very good fire resistant home.
2. They are also vulnerable to flooding and strong winds because of the reasons I have already listed. Hope this helps :)
When Sedimentary rocks are heated with tremendous heat and pressure, it will melt and be back again to magma. After some time it will cool and harden and will become Igneous rocks.
