In$-$Class Exercise $+$ Assignment $31.$Describe the origins and properties of the following woods: a$.$ Softwood b$.$ Hardwood

$2.$What is the organization that certified sustainable wood? What are the differences between certified and non$-$certified wood?

$3.$ Differences between plainsawn and quartersawn. $4.$The purposes of seasoning of timber: $($Seasoning of timber focuses on controlling $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ in the timber$)5.$The purposes of timber surfacing: $6.$Appearance$/$Structural Grading $($Include structural properties of wood$)7.$What are the standard sizes of different timbers?$($Importance of standardizing sizes$)8.$Veneers $9.$Fill up the followings on the different types of manufactured wood products: Types of Manufactured Wood ProductsDescriptionPurposes$/$Uses Types of Manufactured Wood ProductsDescriptionPurposes$/$Uses $10.$List down the different types of wood treatments and their purposes Wood treatment methodsDescriptionPurposes$/$Uses $11.$Types of wood fasteners TypesDescriptionPro$/$Cons and Purposes $12.$The purposes of fabricating wood products $($different elements and uses$)$