The diagram provides information about the process of lifetime of a frog. The most transformation takes place in water exept the last step.
Overall, a future frog spend aproximatelly twelve weeks to become an adult amphibian, starting with frog spawn and ending with the moment when it jumps out the water onto the land.
First of all, newly-hatched tadpoles comes out the spawn but only after six weeks tadpole undergoes changing, unlike newly or one week tadpole six month tadpole get free from its gills. Moreover, only in the eight weeek of life a pollywog acquires hind legs, which are responsible for high jumps and better swimming of the future frog.
In the last phases, twelve week creature already has not only hind legs but front legs as well, which help amphibia to provide support and balance. In addition, in that period of time their tail decrease. The final step includes almost total disappear of its tail and the frog finally hops out the water into the land.