For photosynthesis, plants need water, carbon dioxide, and sunlight (or photons). The water provides electrons, the sunlight provides the energy, and CO2 provides a carbon sou â¦ rce.
Trick question! A single sheet of OSB weighs about 1.5 lbs per sf or 47 lbs, assuing you are asking about 7/16 thick, not 716.One sheet of plywood weighs a bit more.he weight of treated plywood will depend on the size of the  plywood. A 4 x 8 1/2 inch piece of treated plywood will weigh an  estimated 50 pounds.
Making the world better, one answer at a time. The density of particleboard is 46 pounds per cubic foot, or about 2.88 pounds per square foot (psf) for 3/4 material.8 lbs The Specific gravity of Walnut is .64 so it would weigh about 40 pounds per cubic foot, depending on the moisture content. Therefore a board foot would weigh between 3.