Two categories of renewable resources!

　　I believe you are not unfamiliar with the word renewable resources. Today I'd like to share with you a brief introduction of the two major categories of renewable resources! Let's have a look!

　　The available resources of human beings can be divided into two categories: non renewable resources and renewable resources. Renewable resources are one kind of renewable resources, which are non renewable. They can be recycled and reused after being developed and used once in human production, life, science and education, transportation, national defense and other activities. They include steel, nonferrous metals, rare metals, alloys, inorganic nonmetals, plastics and rubber produced and scrapped from minerals Fiber, paper and so on are called renewable resources.

　　Non renewable refers to the material resources that can not be naturally formed or produced for a long time (within millions of years) after being developed and utilized by human beings once. It includes various metal minerals, non-metallic minerals, rocks, solid fuels (coal, stone coal, peat), liquid fuel (oil), gas fuel (natural gas), etc., and even underground mineral water, Because it is the product of rainwater infiltration into the deep underground, after decades, even hundreds of years of contact with minerals.

　　Renewable refers to the material resources that can be generated, grown and propagated by natural or artificial activities within a certain period of time (within a year or decades) after being developed and utilized by human beings. Some of them can also continuously increase their reserves, including surface water, soil, plants, animals, aquatic organisms, microorganisms, forests, grasslands, air, sunlight (solar energy) and climate And marine resources. However, the growth and reproduction of animals, plants, aquatic organisms and microorganisms are restricted by the environmental impact caused by human beings.