Process diagrams can show cyclic processes like the life cycle of a pond frog from egg to adult. Notice how arrows are often used to lead you through the stages in the diagrams.

The diagram illustrates the life cycle of a pond frog.

This

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process has 11 steps, starting from the eggs, followed by the development of the different body parts until becoming adult. In the beginning, the eggs that were laid in the pond form the embryo that opens the egg and releases the tadpoles which cling to water-plant.

Then

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, the little tadpoles develop external gills that allow them to breathe,

as well as

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a tail for swimming. Later on, hindlegs appear and the tiny animal is fed by the food

that is

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stored in the tail. In the following steps front legs appear and the tail starts shortening which allows the animal to leave the pond as it has already become a young frog.

Lastly

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, as time goes it grows until reaches adulthood and is able to reproduce and the cycle starts again.

To sum up

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, the frog needs a lot of evolution to become an adult, its life starts in the water and ends in the land.