Siliceous frustules of diatoms being indestructible, piled up at the bottom of ocean and…
Biology · Class 11 · CBSE — Biological Classification
Siliceous frustules of diatoms being indestructible, piled up at the bottom of ocean and formed a thick bed over billions of years. Such a thick bed is known as
- red sea
- diatomaceous earth
- pseudorocks
- red tides.
Answer
(B) diatomaceous earth
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