Another word for natural is "organic"
Daylighting is a term used to describe maximising natural light in a space.
Another word for natural fertilizers is organic fertilizers.
Methane is another word for natural gas
synonyms natural features
I`m not sure that their is another word meaning reflecting light, but I guess that you could say beaming the light.
non heavy. light.
An antonym is a word that means the OPPOSITE of another word. The word that means the opposite of light is dark.
survival of the fittest
innate, inborn, natural
Not heavy, soft