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How can an oxygen-acetylene torch burn underwater?

An oxygen-acetylene torch can burn underwater because it produces its own oxygen supply. The torch separates water into its constituent hydrogen and oxygen gases, then uses the oxygen to support the combustion of the acetylene. This allows the torch to continue burning even in an underwater environment.


Is oxygen gas also known for helium?

Oxygen is not known as helium. But a mixture of oxygen and helium is used in the oxygen cylinder for underwater diving.


How do underwater plants get their oxygen?

Underwater plants produce oxygen through a process called photosynthesis, where they use sunlight to convert carbon dioxide and water into oxygen and sugars. This oxygen is released into the water and used by aquatic animals for respiration.


What is free oxygen?

Free oxygen refers to oxygen that is not combined with other elements. It is a diatomic molecule with the chemical formula O2 and is essential for respiration in many organisms. Free oxygen is found in the Earth's atmosphere, where it makes up about 21% of the air we breathe.


How do underwater plants survive underwater?

They have cellular adaptations that make it possible for them to get the chemicals they need underwater. Besides trace nutrients that they obtain from soil around their roots, the main needs of a plant is water (H2O, which they are surrounded by) and carbon dioxide (CO2, which readily dissolves in water). The biggest issue for underwater plants is light, so the deeper and less clear the water, the more challenging it is for plant life to exist.