What are the types of refugees and their explanation

Refugees are people that choose to leave their home countries for the reason of civil wars, conflicts within races and resulted them to be disorganized etc.. There are two types of refugees. 1. People running away from civil wars and look free place to settle (peaceful) 2. People from the countries often suffer from natural disasters like tornados, vulcanic, floods and more

Answerdistinguish between the mercalli scale and the richter scale;

Answer mauritania is in the northwestern part of african, meaning its in the western hemisphere, and how do i know/ the map showed me so; ///: )