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.
Quick Answer. Temperature affects air pressure by causing the air to either become more or less dense, which expands or lowers its pressure. Warm air is less dense than cold air, and as air becomes less dense, its pressure increases. Basically, the cooler the air, the more it contracts and becomes more dense.