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Other Factors Affect Population Projections

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Re “California Cuts Its Population Projection,” Oct. 4: I found it alarming to read a story premised on the idea that cultural shifts were the only cause of population change. Since 1960, we have introduced hundreds of thousands of new chemicals into our environment and done many other things that are inimical to life and reproduction. It was disingenuous to look at just a few sociological causes and to ignore what we have done to our planet.

Joe Shea

Bradenton, Fla.

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