Complex sentence: After a child is born there is considerable change in the gut microbiota which is dependent on the genetic factor as well as maternal gut microbiota it even depends upon the mode of delivery of the baby as well as the environment of delivery.
Split into simpler sentences: After a child is born there is considerable change in the gut microbiota. This is dependent on different things such as genes, maternal gut microbiota, the method of delivery of the baby and as well as the environment of delivery.