Synthetic compounds that mimic the biological function of the sex hormone estrogen have been found in the marine environment. How would this pollutant be classified, and why is this a public health concern?

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

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