| 1. | These high-silica rocks on Mars is really just amazing,
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| 2. | Experts on bioterrorism said the discovery of silica was potentially important.
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| 3. | Sponges eaten by these turtles contain silica, in essence glass.
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| 4. | Unusually, diatoms have a cell wall composed of biogenic silica.
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| 5. | An example of a rock formed of silica skeletons is radiolarite.
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| 6. | They use cube-corner retroreflectors made of fused silica glass.
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| 7. | The presence of silica ( flint ) is almost equally general.
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| 8. | The best solution to use is the colloidal silica, Ludox.
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| 9. | The volcano then went silica content than the Main Cone Lavas.
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| 10. | A gold film and a layer of silica aerogel provide insulation.
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