Synonyms for individual words can be found below.
«billion»
«years»
Sentences with «billions years»
- Life evolved 3.8 billion years ago in the oceans and around hot vents. (williamcalvin.com)
- What would we be like to emerging life forms in a few billion years in some nascent «neighbouring universe»? (religion.blogs.cnn.com)
- We're starting with the accomplishments of three and a half billion years of evolution by using what we call the software of life: DNA. (discovermagazine.com)
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sentences)