Write the correct meaning for URI:
What will be an ideal response?
upper respiratory infection
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Answer the following statements true (T) or false (F)
1. Ozone in the upper atmosphere prevents 95 percent of the sun’s UV rays from reaching the earth’s surface. 2. Without the greenhouse effect, the earth’s temperature would be much colder and less hospitable to life. 3. Photochemical smog occurs mostly in cold weather and produces a low-lying layer of pollution close to the earth’s surface. 4. Ozone is an odorless and colorless gas that is hazardous to health in the lower atmosphere. 5. The Air Quality Index measures air pollutants in communities on a 0 to 100 scale.
Answer the following statements true (T) or false (F)
1. The SPF number for sunscreen is a rating of the sun protective factor of the sun screen. 2. The National Highway Traffic Safety Administration estimates that two-thirds of all traffic fatalities are associated with overly aggressive driving behavior. 3. About 3 out of every 10 Americans are involved in an alcohol-related crash at some point in their lives. 4. All children aged 13 and younger should ride in the back seat of a vehicle. 5. Motorcyclists are less likely than passenger car occupants to die in a motor vehicle crash.
Answer the following statements true (T) or false (F)
1. Alopecia can be a sign of an infection of the scalp, of high fevers, of drug reactions, or of emotional stress. 2. As some people age, their skin becomes lighter in color due to reduced activity of the pigment-producing cells in the skin, the melanocytes. 3. The condition psoriasis is a skin eruption caused by the female itch mite, which bur-rows into the skin to extract blood. 4. Rhytidoplasty is the surgical repair of skin wrinkles. 5. Liposuction is the removal of subcutaneous fat.
Use the definitions given to complete the crossword puzzles.
 ACROSS 2 Night-blindness 3 Also called lazy eye 6 Also called hordeolum 8 Condition caused by weakness of external eye muscle 11 Mucous membrane protecting anterior eyeball 12 Outer layer of eyeball 13 Condition caused by irregular curvature of cornea DOWN 1 Bright green dye 4 Visual __________ measures sharpness of vision 5 Farsightedness 7 Condition caused by increased intraocular pressure 9 Nearsightedness 10 A(n) _________ chart is used to test visual acuity