Answers

2015-08-18T20:14:17+08:00
Of course you need to study about the layers of Earth. It is important to know how the planet we live on functions!
 
On a smaller note, you need to know Earth's structure to expand your knowledge about your home planet.

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2015-08-18T20:15:18+08:00
To know every! also to prevent the risk that we are facing because in connection with these we will include the topic of earthquake and also with the prevention. 
hahaha its just my opinion
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