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| Description: Volcanic ash contains tiny particles of glassy, solidified magma (shown here in a scanning electron micrograph) and small rock and crystal fragments. The size of this particle is about 0.01 cm. Ash is abrasive and can cause respiratory problems Picture Stats: Views: 475 Filesize: 139.89kB Height: 992 Width: 1402 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=20982 |