Correct answer: 4
Observation, description and measurement are practical methods (and not only in biology, therefore - general practical methods). The first historically arose the method of observation, then - the description.
We'll surrender the OGE on biology for 100!
The channel @zdamna100egebio will help you with this!
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где? На картинке?
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видимо моделирование, если нигде нет подводных камней, описание менее вероятнее.
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