Question

____ is a gas in the atmosphere. it is not a fuel, but must be present for fuels to burn. * 1 point
fuel
____ is any combustible material that will burn. * 1 point
choose
to produce fire, three components must be present * 1 point at the same time. these three components are fuel, heat, and oxygen. this is known as ____.
choose

Explanation:

1. Oxygen is a gas in the atmosphere essential for combustion but not a fuel itself.
2. A fuel is any combustible material that can burn.
3. The combination of fuel, heat, and oxygen required for fire is called the fire - triangle.

Answer:

1. Oxygen
2. Fuel
3. Fire - triangle