The diagram below shows the Life Sycle of a frog.

The diagram shows the natural process life cycle of a frog from the embryo

stage

, through seven developmental phases from tadpole to fully grown amphibian.  

Initially

, the fertilised eggs grow into embryos, from which tiny tadpoles emerge and shelter under plants in the water or pond. The tadpole begins life black in colour, and it has a long

tail

and shorter body. As it grows, external gills for breathing are produced 

while

subsequent stages in its development include a longer

tail

and when

this

stage

is complete, back limbs begin to appear which allows the tiny creature to swim faster. The baby frog is nourished by food and nutrients stored in its

tail

, and the next

stage

in the cycle is for the front limbs

to begin

growing

while

the

tail

shrinks and eventually disappears. At each

stage

, the creature continues to enlarge significantly and changes in colour from black

,

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to dark green and ultimately to bright green. Once the

tail

has disappeared, the frog is supported on four limbs and continues, in the final phase, to develop into a full-sized amphibian.