Bushfires start when the plants have dried up because of a extended period of time, and some sort of spark ignites the plant matter. This could be from a natural course a lightning strike, rocks falling on each other causing a spark, or it could be because of humans, someone throwing a still lit cigarette butt out the window, someone not putting their campfire out probably. Climate change can make these more common because the heat can dry out the plants faster, meaning the bushfire 'season' will get longer and longer
2. What are 3 ways you could fire proof your house if you lived in an area likely to get bush fires?
Try build your house with bricks, if you can't do that use stucco to coat the outside. Use gypsum on the inside, and try to use a couple layers. Try to get fire resistant glass for you windows and have the frames steel if possible.
3. When something burns it combusts, what is the difference between complete and incomplete combustion?
The difference is that when something completely combusts it means it has burned with plenty of oxygen, and has made carbon dioxide and water. (the equation is Fuel + Oxygen --> Carbon dioxide + Water). When it incompletely combusts it means it has burned with not enough oxygen, and it makes either carbon monoxide and water or just carbon and water (the equation is Fuel + Oxygen --> Carbon Monoxide + Water or Fuel + Oxygen --> Carbon + Water)
