Why do you think the location surrounding the pacific ocean is known as the ring of fire

It is referred to as the Ring of Fire because the edges of it mark a circle of high volcanic and seismic activity, better known as earthquakes. 

It is referred to as the Ring of Fire because the edges of it mark a circle of high volcanic and seismic activity, better known as earthquakes. 

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

Nigeria and south africa