pick a answer
burning,oxygen, fuel, rust, heat, combustion, fire/flame

1. The presence or absence of ________ has various effects on.

2.Matter Common examples are ________ and ________.

3.Fire will continue it's flame provided that there is continous supply of ________ and ________ in the absence of oxygen.

4.There will no ______ that will occur an example of change in the material when oxygen is present is rusting.

5.______ is formed when iron and oxygen react with water or air moisture.​