2006-10-21 01:38:13 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Water, wind, solar
2006-10-21 01:45:18 · answer #1 · answered by picopico 5 · 0⤊ 0⤋
Energy sources can be basically classified into two categories according to their replenishiblity. Renewable resources and non-renewable. Non-Renewable resources are those which can not be renewed or reused once used while renewable resources are those which can be used over and over again. Petroleum, Coal etc. are examples of non renewable energy sources, whereas solar energy, wind energy, tidal energy etc. rae examples of renewable energy sources. These can be used for a variety of purposes right from cooking to running electrical appliances to even running power plants.
2006-10-24 09:31:21 · answer #2 · answered by ratish n 1 · 0⤊ 0⤋
A renewable resource is any natural resource that is depleted at a rate slower than the rate at which it regenerates. A resource must have a way of regenerating itself in order to qualify as renewable.
Renewable resources include oxygen, fresh water, solar, timber and biomass. However they can become non-renewable if used at a greater rate that the environment's capacity to replenish them. For example ground water may be removed from an aquifer at a greater rate than the sustainable recharge. Removal of water from the pore spaces may cause permanent compaction (subsidence) that cannot be reversed.
Renewable resources may also include commodities such as wood, paper and leather.
Plastics, gasoline, coal, natural gas and other items produced from fossil fuels are nonrenewable because no mechanisms replenish them. The abiogenic petroleum origin theory may be such a mechanism but petroleum is currently being depleted at a rate far exceeding discoveries of fields which could qualify as abiogenic in origin.
2006-10-21 09:10:24 · answer #3 · answered by nikki 1 · 0⤊ 0⤋
Soil, water, forests, plants, and animals are all renewable resources as long as they are properly conserved. Solar, wind, wave, and geothermal energies are based on renewable resources.
2006-10-21 08:50:19 · answer #4 · answered by amithaa 3 · 0⤊ 0⤋
Sources of energy which cannot be destroyed by usage are defined as renewable sources of energy. Solar power, wind power are some examples. Unlike energy sources like coal, which gets depleted when you use them, solar power and wind power stay on even when we tap their energy and therefore renewable.
2006-10-21 08:47:56 · answer #5 · answered by KKV 1 · 0⤊ 0⤋
renewable resources have the potential to be used again and again.ex:-
solar energy
wind energy
2006-10-25 00:16:33 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Any natural resource that can be replenished naturally with the passage of time.
Wood and solar energy.
2006-10-21 08:46:26 · answer #7 · answered by TM 3 · 0⤊ 0⤋
I'll spare you the obvious... Oil is increasingly now thought to be renewable - abiotic.
2006-10-21 08:46:28 · answer #8 · answered by Anonymous · 0⤊ 1⤋
Like a tree. Cut it down and another grows in its place. Or solar, you can't ever use it all up.
2006-10-21 08:49:56 · answer #9 · answered by who_me? 2 · 0⤊ 0⤋
Recyclables. For example, newspapers, and plastics.
2006-10-21 08:41:21 · answer #10 · answered by WC 7 · 0⤊ 0⤋