Trees Can Be Divided into Two Main Categories: Hardwoods and Softwoods

Q20: The _ is at the center of

Q21: Wood is a(n) _ material, which means

Q22: _ grain and radial grain refer to

Q23: The _ is a person who has

Q24: Wood that has been air-dried is considered

Q25: Most mills use a sawmill to square

Q26: _ grain refers to the grain running

Q27: The _-drying method allows the wood to

Q29: A board exhibiting _ on its face

Q30: The circular rings surrounding the pith are