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The process by which the oceanic crust is pulled under the continental crust is called subduction.
<h2>The required balanced equation:</h2><h2>

</h2>
Explanation:
• Propane when reacts with oxygen it gives carbon dioxide and water.
- In order to make the equation balanced at both ends of the equation,
Add 4 as a coefficient before on L.H.S (Left Hand Side) of Equation.
• Therefore, the required balanced equation is:
Propane, when added with 5 molecules of Water, yields 3 molecules of Carbon Dioxide and 4 molecules of water, as shown in the below equation -

The correct answer is <span>Glucose and oxygen.</span>
Anion means negatively charged ion.
Among Ar, K, Al and O, only O forms anion.
Hope this helps!