Vents and trenches: tubeworms, iron snails, the Challenger Deep and life without sunlight

The 15 questions of lesson 177 «Vents and trenches: tubeworms, iron snails, the Challenger Deep and life without sunlight» of the biology course of Mova's primary school with their options, 77 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: the lesson at school.

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