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.
1 To avoid staining, travertine floors generally need to be protected with a sealer, which can cost $100-$200 a gallon ($30-$60 a quart). 2  For new floors, many experts recommend at least one coat of sealant prior to grouting and one or two coats after the installation is complete. For new floors, many experts recommend at least one coat of sealant prior to grouting and one or two coats after the installation is complete. 2  Sealing a floor can cost $40-$300 or more, depending on condition and size.