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.
This leather support belt has two D-rings, is padded for comfort, and designed to hold the lineman s body belt in position. Man-rated adjustable belt support straps. Sizes-(Waist Size): Medium-(32-36), Large-(36-40), X-Large(40-44) Weight: 2.9 lbs. http://www.jharlen.combucmfg6263.html. $82.60.