Question

duniya me sabse pahle kon aaya hai

Answer 1

AADAM according to Christian and Muslims....

Answer 2

At the time of the formation of earth there was no living organism there but certain types of gasses and conditions to sustain life were present.
The first organism on earth were Kookerbates. They were unicellular organisms formed my non living elements comprising of a Spark, H2O, CH4, NH3 and H2 gasses. U can understand this by studying Urey Miller's experiment for that.