Последние добавленные видео:
how-much-oxygen-is-in-the-air
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7 лет назад
517 7 лет назад 2:42How much oxygen is in the air
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12 лет назад
111318 12 лет назад 1:49How Much Oxygen Does a Person Consume in a Day?
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1 год назад
28490 1 год назад 4:40Why Pure Oxygen Will Kill You, But The Oxygen In The Air Won’t
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6 месяцев назад
115 6 месяцев назад 1:48How Much Oxygen Is In The Atmosphere? - Earth Science Answers
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6 лет назад
3000806 6 лет назад 4:15What If Oxygen Doubled in Earth’s Atmosphere?
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7 лет назад
67 7 лет назад 2:42How much oxygen is in the air
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1 день назад
11 1 день назад 9:35Respiratory volume,tidal volume.inspiratory reserved volume|cloudless lectures
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4 года назад
111 4 года назад 3:13How much Oxygen is in the air? # Kids Science Experiment #Science for kids
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5 лет назад
97261 5 лет назад 4:07How Does The ISS Get Oxygen?
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5 лет назад
27 5 лет назад 2:49Learning Thru Playing - What is Oxygen (O2) ? How much Oxygen is in air ?
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8 лет назад
3286503 8 лет назад 5:10Oxygen’s surprisingly complex journey through your body - Enda Butler
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3 года назад
77014 3 года назад 4:36How Long Will an Oxygen Cylinder Last? [Oxygen Tank Duration]
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4 года назад
96 4 года назад 2:30who discovered oxygen? and how much of oxygen is present in air?
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11 лет назад
22843 11 лет назад 2:01To show that 20% of Air is Oxygen
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4 года назад
45161 4 года назад 2:13How does ocean produce oxygen?