July 2022 1 3 Report
Поставьте сосуд с водным растением элодеей под яркий свет осветительной лампы. Вскоре вы увидите, что в воде появятся мелкие пузырьки кислорода, которые поднимаются вверх. Объясните, почему выделяется кислород. Сделайте вывод.
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