Воздух и его охрана
- Урок 6. Воздух и его охрана
Автор: Исмаилова Анжела Зендиновна
Видеоуроки Google Play -
мы узнаем:
- о свойствах воздуха;
мы научимся:
- определять источники загрязнения;
мы сможем:
- исследовать свойства воздуха.
4 days ago 00:03:47 1
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