Sebastian places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the bestexplanation for why the pencil appears broken?The pencil absorbs all the light rays that hit it. Water reflects light rays away from the pencil. Light rays are bent by the water in the glass. The surface of the water reflects light rays.

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.

Sorry but there isnt a map i would love to but if u can paste the picture of the map in my comment and i will you 

Global warming is happening at an alarming that there is no way of preventing it from happening because humans contribute to it