Catawba rhododendron bushes can reach a height of 6'-8' with a spread of 4'-6'. Displays are most effective when rhododendron bushes are massed together. These are poisonous plants -- do not allow children to ingest any of the azaleas or rhododendrons.
Best Answer: Tornadoes are caused by winds. When a tornado forms the wind pressure around the tornado drops and that's what you see on the barometer, the pressure goes down.
Mrs. Deringer's Air Pressure-The force with which air presses down on the Earth Believe it or not, air takes up space, has mass and weight. Air pressure is affected by three factors. H. A. T. The H stands for Humidity. As the Humidity increases air pressure decreases. That means as the amount of moisture in the air increases the air pressure decreases. The A stands for Altitude. As the altitude increases the air pressure decreases.