In the Late 1900s,U.S.civilian Fire Deaths ________________________

Q29: Heat-expanded air _.<br>A)is more dense than cool

Q30: Which of the following was largely destroyed

Q31: For a log to burn completely,there must

Q32: In 1988,a U.S.national park had fires that

Q33: During burning,the chemical structure of solid wood

Q35: Pyrolysis of cellulose produces which of the

Q36: The radiant heat released from fires is

Q37: Because of the poor conductance of heat

Q38: In effect,fire is the photosynthesis reaction in

Q39: Wet wood becomes extremely difficult to ignite