What decisions did scientists have to make after Eris was discovered?

In north america, most winter storms form when cold, dry air from interacts with warm, moist air from

One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

Why is oman trying to develop its tourism and manufacturing sectors?