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How does reproduction differ from bacteria, grasshopper, fish, and a bear?
Bacteria - asexual reproduction (binary fission). All the others perform sexual reproduction (normally).
Grasshopper - internal fertilisation (which is true of all terrestrial animals), but external gestation (it lays eggs).
Fish - external fertilisation (eggs and sperm released into the water) and external gestation (fertilised eggs mature themselves).
Bear - internal fertilisation and internal gestation (young grows inside the mother).
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