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Questions and Answers
What do phytoplankton use to build their skeletons?
What do phytoplankton use to build their skeletons?
- Carbon dioxide gas from the air
- Calcium carbonate (correct)
- Chalk
- Fossilized skeletons
How do fossilized phytoplankton skeletons turn into chalk?
How do fossilized phytoplankton skeletons turn into chalk?
- They sink to the bottom of the ocean
- They release carbon dioxide gas into the air
- They are eaten by other ocean organisms
- They are weathered by rain and waves (correct)
What happens to the carbon dioxide gas released from weathered chalk?
What happens to the carbon dioxide gas released from weathered chalk?
- It is absorbed by other ocean organisms
- It is converted into oxygen gas
- It turns into calcium carbonate
- It can be taken in by phytoplankton again (correct)
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