Question

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このthere is a 〜から続く一文の意味が取れません。make a living が変化したものですか？

advantage of the daytime (economy. Given that there is a living to be made at
自然の家み
night, and given that alternative daytime trades are thoroughly occupied, natural
selection has favoured bats that succeed at the night-hunting trade.
It is probable, by the way, that night-hunting (2) (7 back
goes
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