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 movable Work Platform fits on any Little Giant ladder rung and is rated to support up to 375 pounds of anything from paint to people. Our unique design allows it to tuck away when not needed yet easily moves into place with your foot when desired. 375 lb. weight rating. Attaches easily. Folding design for storage.