A 161 million-year-old fossil, linked to a line of extinct frog-like amphibians, is the oldest tadpole ever found. By Asher Elbein The metamorphosis of a frog from baby to adult is one of nature’s ...

The word ‘metamorphosis’ comes from the Greek words ‘meta’ meaning change, ‘morph’ which refers to shape, and ‘osis’ meaning a process. Metamorphosis is the process of changing the shape of the body.

Understand that all animals have a life cycle that includes being born, developing into an adult, reproducing, and eventually dying Understand that the details of life cycles vary from one organism to ...

Researchers studied the evolution of the body sizes of frogs and their tadpoles. They found that the two life stages do not evolve completely independently of each other as previously thought. If you ...