Corrugated cardboard has two main components: the linerboard and the medium. Both are made of a special kind of heavy paper. Linerboard is the flat facing that adheres to the medium. The medium is the wavy fluted paper in between the liners. Single Wall is manufactured with the medium between two sheets of linerboard. Double Wall has three sheets of linerboard with two mediums in between.
A new Microsoft-commissioned survey shows European girls lose interest in STEM subjects around the age of 15. Microsoft admitted it doesn't have a comprehensive explanation for why 15-year-old girls lose interest in science and math.
For the 42 girls in this study who were in swimming, the average age was 15.8 plus or minus 1.7 years, and the sit and reach score (regular not modified) was 40.2 plus or minus 7.6 centimeters.or the 43 girls in this study who were in field hockey, the average age was 14.6 plus or minus 1.1, and the sit and reach score was 36.9 plus or minus 7 centimeters.