Natural sources : sun, firefly
Artificial sources: oil lamps, tube lights
artificial====================Answer #2:Fire is not light at all. But if a fire happens to be hot enoughto emit some light, then that light is perfectly natural.
Depends on the country but usually means they are flavors derived from natural chemicals (natural flavor) or artificial man made chemicals (artificial flavors). A natural flavor MAY be healthier but it MAY also be unhealthier than artificial flavors. Depending on the country some natural flavors may be a mix of artificial and natural chemicals. In fact, an orange natural flavor will most likely be a mixture of chemicals tat have no relation whatsoever to an orange, or possibly not even a fruit. As such it is a complete secret what the chemicals are and you are better avoiding natural and artificial chemicals altogether.
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Oases.
Americium is an artificial chemical element, man made !
Americium is an artificial element, a natural source doesn't exist.
TV, street lights, House lights, computer screen
artificial====================Answer #2:Fire is not light at all. But if a fire happens to be hot enoughto emit some light, then that light is perfectly natural.
Examples are lightbulbs,neon lights, traffic lights,headlights, concert lights.
Natural fatherhood refers to becoming a father by natural means, as opposed to artificial insemination, in vitro fertilization, or some other artificial method.
Natural. Some makeup can still look natural
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A zone.
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Depends on the country but usually means they are flavors derived from natural chemicals (natural flavor) or artificial man made chemicals (artificial flavors). A natural flavor MAY be healthier but it MAY also be unhealthier than artificial flavors. Depending on the country some natural flavors may be a mix of artificial and natural chemicals. In fact, an orange natural flavor will most likely be a mixture of chemicals tat have no relation whatsoever to an orange, or possibly not even a fruit. As such it is a complete secret what the chemicals are and you are better avoiding natural and artificial chemicals altogether.
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Natural selection is more efficient ad more precise.