Order the layers of the atmosphere. Include the ozone layer between appropriate layers. Top item = closest to space
Bottom item = closest to earth's crust
1. X Troposphere
2 x Stratospshere
3. X Mesosphere
4. x Ozone Layer
5. X Thermosphere

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.