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Submit ReviewNeither an animal nor a plant, the protist has a neck that can rapidly stretch to 30 times the length of its body and it can swallow smaller creatures swimming nearby - or rip chunks off bigger ones. And it's one-tenth of a millimetre long. So how does it accomplish that stretching and then retracting?
Guest: Dr Jonathan Webb, ABC Science Editor
Brainteaser (answer in the audio):Write down the following: 9999 = 100Now, by adding simple mathematical symbols between the nines - can you turn it into a correct equation?
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