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Questions and Answers
What are calcareous nannofossils?
What are calcareous nannofossils?
- Fossil remains of land plants that live in oceans
- Fossil remains of single-celled algae that live in oceans (correct)
- Fossil remains of deep-sea corals
- Fossil remains of marine animals that float near the ocean surface
Why are calcareous nannofossils considered useful age indicators for marine sediments?
Why are calcareous nannofossils considered useful age indicators for marine sediments?
- Because they form high proportion of carbonate in the sediments
- Due to their rapid rate of evolution and wide geographic distribution (correct)
- Because they have been living in the world's oceans for at least 200 million years
- Because they are the largest producers of calcium carbonate
What is the ecological habitat of coccolithophores?
What is the ecological habitat of coccolithophores?
- Upper 200 m of the oceans (correct)
- Shallow coastal waters
- Deep sea
- Freshwater lakes
What is the role of calcareous nannofossils after their death?
What is the role of calcareous nannofossils after their death?
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Which group do calcareous nannofossils belong to?
Which group do calcareous nannofossils belong to?
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