Because of cohesion and transpiration, water is able to move against the flow of gravity in plants. The attraction of water to other water molecules, or cohesion, allows water to pull other water molecules up through the xylem.
Room addition cost about $210 per sq.foot and if there is a bathroom in addition you should add $5,000 in average and if there is a kitchen in addition you should add $10,000 in average to total price of $210 per sq.foot x sq. footage.
Most bathroom additions will fall in the $180-$400 per square foot range. Most master bedroom additions cost between $150-$300 per square foot. Most additions that add a second floor over an existing one story home cost between $150-$280 per square foot.