What natural resource is made from tiny dead organisms buried in layers of sediment over millions of years?
Two examples of natural resources are _________________ and ______________
Petroleum is a natural resource that is formed in _______________________
People can conserve natural resources by ______________________
The breaking and changing of rocks is called _________________________
A mountain is a type of ______________________
The movement of rocks along a fault may cause an ________________________
The freezing and melting of water inside rocks can cause ___________________
Really large areas of ice formed by snow are called ___________________________
_____________________ also protect soil from wind and rain, helping to slow down erosion
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