
Three invertebrates - a water flea, a green hydra, and a planarian flatworm - engage in a food-chain fight after the hydra tries to eat the flea.
Three invertebrates - a water flea, a green hydra, and a planarian flatworm - engage in a food-chain fight after the hydra tries to eat the flea.
1998
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2023
1963
2023
1985
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2012
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2026
2013
1988
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1998