Fresh water and oxygen
One of the most important renewable natural resources of our planet is water.Nature is constantly receiving this resource in large quantities, since there is an annual loss of rainfall.
As for oxygen, then its sustainability is also no need to worry.Basically, the oxygen formed by photosynthesis.By the way people consume only about ten percent of the oxygen of the total composition.
to biological resources is the sum of the masses of plant and animal on the planet.Human impact on this category of resources has long led to the extinction of many species of animals and plants.If it goes on, about 70 years later will be felt a negative side of the process.
to renewable resources ranked higher and lower green plants and heterotrophic organisms, that is, fungi and an
imals.Heterotrophic organisms derive energy from food and plants, and therefore they are combined into one group of renewable resources.
main feature green plants should be considered autotrophy.Simply put, the plants are able to produce organic substances from inorganic compounds under the influence of solar energy.This process is called photosynthesis.Because of this, the plants produce in the biosphere, about 98 percent of the organic mass.It turns out that it is a plant form the normal conditions for propagation and activity of heterotrophic organisms.
biomass currently ranks sixth among other energy sources on the number of stocks after oil and natural gas.The performance of biological resources occupy fifth place, losing in this case solar, wind, geo and hydrothermal energy.Also, biomass is the largest on the application in the world economy natural resource.
Regarding renewable resources
Renewable Resources Some volumes are much lower volumes of household consumption.Therefore, these resources are particularly vulnerable.They should be carefully monitored person.To respect renewable resources include: arable-suitable soil, water resources in the regional aspect, forest stands of a ripe age.
For example, productive soils form very slowly.A permanent erosion accelerated by unsustainable land use will inevitably lead to the destruction of valuable arable layer.In one year, it can be destroyed by a few centimeters of the soil.
water resources on a planetary scale is practically inexhaustible.But the supply of fresh water is unevenly distributed on the surface of the land.Because of this, some large areas are sorely lacking water.Also, inefficient water use leads to a constant depletion of water.