When did marie get uranium from?

Although devastated, Marie Curie vowed to continue her work and in May 1906 was appointed to her husband’s seat at the Sorbonne, thus becoming the university’s first female professor. In 1910, with Debierne, she finally succeeded in isolating pure, metallic radium. For this achievement, she was the sole recipient of the 1911 Nobel Prize in chemistry, making her the first person to win a second Nobel Prize.

Explanation:

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the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.