A little small change through a sequence of steps to a level that can grow up, grow up. Be improved and appropriate than the original, or it may progress to a stage that fertility as satisfactory.
Changing little by little. Through the steps To a level that can grow up to have improved for the better. And more appropriate, or may progress to the stage where fertility is satisfactory.
Change bit by bit through the sequence. To the level that can be expanded up grow up had improved. And reasonable than the original or may progress to the rich is satisfactory.