They get brighter because fire uses oxygen to burn. Fire needs oxygen heat and fuel. Without any of these you will have no fire. So blowing more oxygen into a fire will make it stronger.
Yes, graphite can burn and produce flames when exposed to a high enough temperature.
Most of the radiation emitted by hydrogen flames is in the ultraviolet spectrum, which is invisible to humans. This usually makes the flames colorless, but they sometimes have a very faint blue or purple tint.
No
yes flames is fast food because flames gives you heart burn
When you burn coal.
because we burn the oil
to produce heat and burn materails
oxygen ( O2)
Oxygen is what makes things burn at all. The more oxygen there is, the brighter it can burn.
Some Yule logs that are available commercially have green and red flames when they burn. The chemicals that cause the colored flames are barium and strontium.
it means that everything in the ecosystem has burnt in flames
That depends on what is being burned. paper for instance, burns at 451 degrees farenheir wheras things like coal burn with hotter flames.