3. Outline the difference in the temperature and rainfall conditions that are experienced by places that have a cold ocean current flowing past
them compared to places that have a warm ocean current flowing past
.
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Geologists use  seismic waves to  locate an earthquake's epicenter.. 

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.

Are there any words that will you