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__________ trees grow cones on their branches.
Liquids and gases transfer heat by __________.
_______ erosion starts to widen the river.
A _______ is material left behind by a moving glacier.
Air _________ is bad in many cities.
_____________ is the water that falls out of the sky.
The _______ has a wet season and a dry season.
According to the _________ on the kitchen wall, the temperature is below freezing today.
__________ energy is heat and electricity produced from hot, underground water.