Assertion: dolphin | /r/CapableOf | evolve to marine mammals
Facets:
value: from land animals
type: OTHER
Source sentences:
text: In regards to why it is unlikely that dolphins will ever develop gills is because evolution is an extremely slow process that occurs over millions of years and while dolphins have evolved from land animals to marine mammals they still share many of the same characteristics as other mammals such as the need to breathe air, being warm-blooded animals, giving birth to children, having hair (some species have hair at birth which falls off shortly after they are born) and producing milk.