What are the harmful effects of artificial light?

Some harmful affects of artificial light are light pollution and a lack of vitamin C.

Doulingo is good. you can also watch movies that are in french, i am using this tactic  for japanese  and it a lot. listing to music with  french  lyrics would work well too because  you could absorb  the words while having fun.hope this ! : )

Nachna najanne agan tedho bhanejhai सिता lai राम्रो अक्षर लेख्न आउदैन तर उनी कलम lai दोष दिन्छन्।