ページの作成:「<br> The ozone layer is primarily important in blocking most UVB and the remaining section of UVC not already blocked by common oxygen in air. The shorter bands of UVC, a…」
(ページの作成:「<br> The ozone layer is primarily important in blocking most UVB and the remaining section of UVC not already blocked by common oxygen in air. The shorter bands of UVC, a…」)