Materials To make the air cleaner, you will need: 4 (20 x 20 x 2-inch) household air filters 1 (20-inch) box fan Cardboard (such as the box the fan came in) Scissors Duct tape The most important part of sourcing your materials is ensuring the quality of your air filters
Chewing tobacco was still deeply entrenched
There was a steady trend in this lung cancer mortality ratio between lifelong non-smokers, ex-smokers who had stopped at 25-34 (see table 6 footnote), 35-44, 45-54, or 55-64, and continuing smokers
Respiratory Disease Smoking also increases your risk of other respiratory diseases, such as emphysema, bronchitis, and chronic obstructive pulmonary disease (COPD)
Cold weather Indoor recess is determined based on the following guidelines: If the temperature outside, together with the wind chill, is below 0F , all students will remain inside for the entire lunch hour