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.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.