Its Only
Natural

Nonrenewable resources have been identified as those resources which have a recycle time that is so long, it is unreasonable to expect them to be regenerated in several hundred lifetimes or generations. These include minerals such as fossil fuels which include energy producing elements such as coal, petroleum, or natural gas. Nuclear fuels are also used for the production of heat energy. Other nonrenewable resources include minerals such as iron and aluminum, and precious metals. Use the links below to find the approximate recycle times of each of the elements listed below. Also, identify factors effecting the regeneration process. Use the Response Form included with the lesson to record your responses.

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	Plants and Foliage This can include forest wildlife, garden plants, trees, grass, and agricultural products.
	Air Include a discussion of the process of photosynthesis.
	Water The Water Cycle will be discussed in the next lesson. Here briefly describe the process concentrating on the length of time required to complete the cycle. Remember the cycle is dependent on a variety of factors. Identify at least one of these factors.
	Animals The reproduction cycle of animals varies greatly. Discuss fish and birds, as well as mammals.

	Fossil Fuels This will include coal, oil, and natural gas..
	Nuclear Power There is some question as to whether Nuclear fuel can be classified as eighter renewable or nonrenewable. Briefly discuss the issues related to its use.
	Minerals This includes elements which are mined from the earth such as iron, aluminum, and copper. Precious metals such as gold and silver are also included. These occur in different concentrations around the world. Consider mankind's use of these elements in your discussion. What does this mean in terms of their "cycling time".

	Glossary
Ranger Review

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