1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 A small-to medium-capacity dehumidifier (11-25 pints) for a living room can run around $100-$250 or more, depending on size and features such as a humidistat to set the desired humidity, auto-shut-off when the tank's full, energy efficiency and quiet operation.
Dehumidifiers Electricity Cost Calculator. Dehumidifiers are rated in Watts (W) or Kilowatts (kW) . Look for the energy rating on your dehumidifier (usually displayed on the back of machine) then use our energy calculator to see how much it will cost to run per hour, day or week.Compare dehumidifier prices.based on 12 hours a day using the Average rate of 15.2p/kWh (September 2014 tariff) for a unit of electricity.