Query | User |
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boiling 20water | entered by user 2194410 |
earthquake zones crescent city ca | entered by user 2445254 |
how to protect structures from earthquakes | entered by user 4089605 |
is silicon dioxide a chemical compound consisting of silicon and oxygen. silica occurs widely in rock-forming minerals called silicates which make up much of the earth's crust and mantle | entered by user 2057956 |
pennsylvanian period enviroment | entered by user 2123829 |
recycle symbol | entered by user 10239973 |
water cycle diagram | entered by user 1462859 |