The given diagram exposes the growth of frogs from the eggs stage to the adult frog stage.
Overall, the process covers 7 main stages, 5 of them taking place underwater and 2 above the ground.
The lifecycle of a frog starts as eggs which transform into the embryo later on. In the next stage, the embryo enters its tadpole phase which includes 3 minor similar changes. After this period the tadpole begins to grow its front legs. After this surge, the last stage that happens underwater takes place called the start of pulmonary breathing in which the tadpole grows its respiratory organs.
After its last aquatic period, the half-grown frog proceeds its transformation on land, leaving only one stage for becoming a completely mature frog. Subsequently, the frog becomes a tadpole frog while losing its tail as time passes. Finally, the tadpole frog becomes an adult frog and the cycle continues…