Natural=Sun
Manmade=light bulb.
The ozone can be damaged by natural or man made sources. Man made is CFC's and natural is UV rays.
Man made
Jewellary is a man made resource derived from natural sources, cos' the metals & stones i.e., Gold, Platinum, Silver, Gemstones etc., are derived from natural sources and crafted into beautiful jewellery by man. Shop for original gemstones online at Ratna Jyoti, the certified gem & jewellery portal.
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
The ozone can be damaged by natural or man made sources. Man made is CFC's and natural is UV rays.
Man-made light sources... lamp, torch, LCD etc.
Man made
what gases? I'll guess that you mean oxygen. Natural source - the air, man-made - none.
Nothing man made is natural. The sun is a natural souce of light.
No. A light bulb is.
Light bulbs do
It works by itself and is not man made.
Sun is a natural source of light because it gives out sunlight all by itself and it is not man- made.
Jewellary is a man made resource derived from natural sources, cos' the metals & stones i.e., Gold, Platinum, Silver, Gemstones etc., are derived from natural sources and crafted into beautiful jewellery by man. Shop for original gemstones online at Ratna Jyoti, the certified gem & jewellery portal.
No. A traffic light is a man made object, not part of the natural environment.
Candlelight is man-made, so is artificial. Sunlight is natural light from the Sun.