Natural resources is resource which occur naturally without any influence or aid of human beings. Eg fossil fuels like petroleum, coal etc

Man made resources are resources which has been created or manufactured by humans. for their well being. Eg; computer, Television, building

Natural resources can extinct if they are over used and humans cannot get it back but man made resources cannot decline as natural resources.    
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Natural resources are the resources that come from nature such as plants,animals etc. while man made resources are the resources which are invented by humans like refrigerator,containers etc.