Ba­bies trans­form into adults

Science Illustrated - - ANIMALS -

In some an­i­mal groups, growth does not take place as a long, grad­ual process, but rather in a series of highly sep­a­rate stages. In the most ex­treme cases, there are four stages, and none of them are very much alike. The clas­sic ex­am­ple is a but­ter­fly, which goes from larva to colour­ful flier, but other in­sects also go through a sim­i­lar process known as com­plete trans­for­ma­tion of meta­mor­pho­sis. Other species trans­form, but not com­pletely.

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