Usage History of 'chloroplasts'

The following chart shows how frequently 'chloroplasts' appeared in printed materials over time. For example, the word 'chloroplasts' occurred 4 times in books in 1862 and 17,985 times in 2008. From 1862 to 2008, the word 'chloroplasts' was used a total of 896,522 times in books scanned by Google. See Reference: Google Ngram project.

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