Imports of lumber into the united states were down 50% in 2008

True

Explanation:

This statement is true because in the year between 2006 to 2010, The total imports of lumber reduced by 68%. This happened because the total consumption of lumber across the world including USA reduced by 39%. Out of this 39% , the overall appearance-based lumber use in USA declined by 50% due to which the import also reduced by 50 % .

The worst sufferer was the Canada , where the total imports declined by 75%

Hence, the given statement is true.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.