one is a noob act
man-made structures were made by humans, but natural structures made itself.
The difference between a human-made system and a "natural" system will depend entirely on what the system is. In many cases the human system will be simpler and have a narrow focus.
Man-made fabrics are produced using chemical processes, such as polyester and nylon, while natural fabrics are derived from natural sources like cotton and wool. Natural fabrics are breathable and biodegradable, while man-made fabrics often offer more durability and resistance to wrinkles and stains.
The difference between natural and synthetic things are that synthetic things are not real. The definition for synthetic is: artificial; not genuine. Natural things are things that can be found in nature and is real.
chemical hazards
natural scents are more natural
man-made structures were made by humans, but natural structures made itself.
if you are a pro at diamond gazing then you will know the difference
A laser is man-made, a river is natural.
Pooping.
It is a distinction most commonly made in golf. Natural hazards are for instance water, and sand bunkers. Although usually made by man, they are considered to be part of the 'natural' environment. Wooden benches, sprinkler holes etc. are not considered 'natural' and therefore man-made.
fistulas are natural occurring and shunts are man made devices
The difference between natural biological and man made methods is that the later uses chemical processes which can be harmful to the environment. Biological methods use evaporation, oxidation, and biodegradation to safely cleanup
canals are man made waterways, rivers are natural waterways
The difference between a human-made system and a "natural" system will depend entirely on what the system is. In many cases the human system will be simpler and have a narrow focus.
natural process is a process in whichit is naturally without any plan occured and the man made proceess is a process which is done by man.
Natural light is light made by things in the nature (animals, plants etc.), and the sun. Artificial light is human made light.