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 Dehumidifier capacity is generally measured by how many pints of water a unit removes from the air in 24 hours. 2  A mini-dehumidifier (1-10 pints) for a bathroom, closet or under a counter usually costs $40-$70.
Posted July 11 2010 - 6:43 AM. I always hear the radio ads for the Wave ventilation system to expel damp air from the basement. I'm interested as I want something better than my dehumidifier. I did a search online and found the cost to be around $1700. I then found a post by a guy who made his own which I'm thinking of trying.