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.
The weight of a plywood sheet will proportionally increase with increasing in width, length and thickness. 3/4 thick plywood will weigh about 2.5 pounds per square foot (PSF). And the whole 4â x 8â sheet will be approximately 84 lb. or 38 kilograms.