Utiliser "diatoms" dans une phrase

1. Diatoms (Diatomite) are either lacy-like snowflakes in appearance, or tubes, which are better

2. Three-quarters of the air we breathe comes from diatoms

3. It was even made of the same material, silica, that was in glass, and was nothing but the crushed shells of tiny, ornate sea organisms called diatoms

4. these are diatoms that can be the result of silicates in tap water