The diagram illustrates information about the frog and its life cycle.
Looking from an overall perspective, it is readily apparent that the first level is tiny eggs, embryo, todpole, and the last one is usual adult frog.
To start with eggs, which is very small and look like a caviar. Those eggs transformered into embryo, and from this level the color of the frog is green. After that, three mini tadpoles are developing dy by day, and increaing at size at the same time. Then, there is new function in the body of a frog; front legs break through.
The next level is starting of pulmonary breathing of flog, which has a long tail and four legs. Next step is changing into todpole frog, which looks like an usual adult frog, but still needs developments. After some time, it will be transformed into normal adult frog, with rounded stains at shoulders and legs.
