Lol is this a statement or question i was gonna say their perserverance
An effective introduction usually tries to capture a reader's interest. ... Many strategies can be useful in capturing a reader's attention, but two of the most important ones are asking a question that leads the reader to reflect on the topic or providing an interesting fact about the subject
Answer: Oxygen
Explanation:
The gas that is useful for burning from the options given is oxygen. For combustion to take place, it should be noted that oxygen is required.
Fire is simply a chemical reaction that is being created from fuel and oxygen which eventually creates the heat and the light that's gotten. The percentage of oxygen that is in the air is about 21%.
No, you'd only capitalize it if it were a proper noun, Like North America.