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Air
Air is constantly renewing allowing us to breathe. -
Methane
It is a natural gas that is constantly renewing and is presented on the air we breathe. -
Geothermal Energy
It means capturing the heat trapped within the earth's surface and converting it to usable energy. It is constantly renewing inside the earth. -
Sun
The sun renews every 24 hours. -
Alcohol
Particularly ethanol is derived from the starch in corn kernels. The process of convertion takes from 40 to 50 hours. -
Water
Water is replaced on rivers every 16 days and on the atmosphere every 8 days. However, for huge amounts it varies and can take even hundreds to thousands of years. -
Trees, Plants, and Lumber
The have different life spans according to the harvest season and each plant.
Some examples can be: Oaks, Elm tree, Palm tree, Violets, Roses, Sunflowers. -
Food Crops
It varies on the harvest seasoning and the amount of time needed for each plant to grow.
Some examples can be: Aplees, Grapes, Potatoes, Bananas, Rice, Tomatoes. -
Animals
Time differs according to each animal's birth time.
Some examples can be: Chickens, Frogs, Goats, Moose, Tuna, Pigs. -
Nonrenewable Resouces
It takes hundreds and even millions of years for these to renew. They are not replenished with the speed at which it is consumed.
Some examples can be: Coal, Oil, Natural Gas, Nuclear Energy, Uranium.