The develop gametes vary from the juvenile haploid cells when the sperm cell, the male gamete, after meiosis, a cell that forms into a sperm will frame a smaller shape with long tail, flagellum that the cell uses to move
Because they no longer have their source of fuel: warm moist air above the sea.
Humans ferment lactic acid in muscles where oxygen becomes depleted, which is why sometimes if you finish a run and don't stretch soon you have have discomfort. <span />