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The tests of planktonic foraminiferans eventually sink to the bottom in such high numbers that large stretches of the ocean floor are covered by a type of calcareous ooze called ________?

1) Diatomaceous earth
2) Siliceous ooze
3) Manganese nodules
4) Calcium carbonate

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Final answer:

The tests of planktonic foraminiferans sink to the ocean floor and create a calcareous ooze called calcium carbonate ,large stretches of the ocean floor are covered by a type of calcareous ooze called Calcium carbonate.

Step-by-step explanation:

The tests of planktonic foraminiferans eventually sink to the bottom in such high numbers that large stretches of the ocean floor are covered by a type of calcareous ooze called Calcium carbonate.

The tests of planktonic foraminiferans sink to the ocean floor and create a calcareous ooze called calcium carbonate.

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