Does red oak wood burn faster than poplar wood?

When wood is shreaded into dust, there is far more surface area that is able to come into contact with the fire as opposed to the wood, therefore burning faster

Green is not a species of wood- it just means recently cut wood that still contains much of the moisture and sap of the living tree. When cured (means dried) it will burn much better. Cured Oak is...

because iron doesn't burn...it melts.

Yes. Pine does not burn as long- quick, hot fire. Good for kindling.

Yes because paper is so much thinner and covers less area than wood.