Good Ozone and Bad Ozone Stratospheric ozone protect lives on Earth from harmful effects of UV radiation. .Iropospheric ozone: Causing respiratory distress and eye irritation Destroying plants Producing cracks in rubber Ozone is a strong oxidant, reacts with molecules containing C=C double bonds, forming epoxides
Teaching plan Book three Unit Five Section A Graceful hands. Warm-up Questions and Introductory Remarks （1)What does the title\ Graceful hands remind you of at first sight? （2)How did the woman die?
Unit Four Section A: Five Famous Symbols of American Culture warm- up activities: 1. What are the symbols of American Culture that you have heard about? 2. What can you imagine to be the reasons why the Statue of liberty was built?
Book two Unit nine Preview Students all over the world dream of what will happen in their future. Many hope to travel abroad where they can both use their education and earn a good salary. Large, modern countries like English and America welcome such graduates, making it easy for them to enter the count
letters to nature Em, the simulation suggests that this matrix becomes much closer to is the realization of a cavity with both high quality factor, Q, and the ideal one(keeping almost ideal outputs for 110) and 111)input small modal volume, V. The ratio Q/V determines the strength of states)if we slightly decrease the rise/fall
Winds provide the energy to set the 1940 Tacoma Narrows Bridge motion Oscillations travel to the central span and reflected from support towers. By the principle of superposition the primary and reflected waves turn into a standing torsional wave
