Also, plants put the water together with carbon dioxide to make sugar. This takes energy, which plants get from light. Water also helps plants stand up tall, even when they arenât made of wood. They donât have bones, but they do have cell walls and water pressure.
The average cost to sealcoat an asphalt parking lot with either asphalt or coal tar emulsion pavement sealer ranges from $0.14 - $0.25 per square foot.he average cost to sealcoat an asphalt parking lot with either asphalt or coal tar emulsion pavement sealer ranges from $0.14 - $0.25 per square foot.
The cost of spray foam insulation is usually expressed per board foot, which is a measure of volume (not linear feet). 1 board foot is equal to 144 cubic inches, or a board that measures 1 foot long and 1 foot wide and 1 inch thick. Open-cell spray foam costs $.40 to $.70 per board foot. Closed-cell spray foam costs $.75 to $1 per board foot. Expressed in terms of square feet, spray foam installation cost is $1.50 to $3.00 per square foot (for an average-sized home between 2,000 to 2,500 square feet, that's a total cost of $3,000 to $7,500.