help with homework . my question is multiple choice this are the options that they gave :
1)gold
2)granite
3)oxygen
4)diamond
which one is a renewable natural resource ?
1)gold
2)granite
3)oxygen
4)diamond
which one is a renewable natural resource ?
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Who comes up with these questions?
Gold and oxygen are chemical elements, and are neither created nor destroyed.
Oxidation combines oxygen with various elements, including carbon. Oxygen is "renewable" in the sense that it can be separated from its oxides - for CO2, this occurs on a large scale with plants and an even larger scale with microbes.
Diamonds and granite are both "renewable" in nature, but on a much longer geological time frame. And humans can now manufacture diamonds, dramatically speeding up the natural process.
The "correct" answer is almost certainly oxygen.
Gold and oxygen are chemical elements, and are neither created nor destroyed.
Oxidation combines oxygen with various elements, including carbon. Oxygen is "renewable" in the sense that it can be separated from its oxides - for CO2, this occurs on a large scale with plants and an even larger scale with microbes.
Diamonds and granite are both "renewable" in nature, but on a much longer geological time frame. And humans can now manufacture diamonds, dramatically speeding up the natural process.
The "correct" answer is almost certainly oxygen.
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oxygen..it is produced by trees.