Arctic Ozone Hole. The Ozone Layer The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 97-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on earth.
Nettie Stevens: Scientist Extraordinaire and STEM Icon; a Steampunk Feministâs Perspective Nettie Stevens If you want an example of the true grittiness and resourcefulness of the American spirit, you canât go past Nettie Stevens.
Hattie /hat-tie/ [2 sylls.] as a name for girls. Hattie's root is Old German, and the name Hattie means home leader. Hattie is a variant transcription of Harriet (Old German): feminine of Harry, from Henry. Hattie is also a form of Henrietta (Old German).