This advanced chemistry text has been updated to match the specification for A Level Chemistry from September 2000. The chemical storylines and related data include the latest developments and they are split clearly into AS and A2 units so that they make moving from one level to the next more logical for students. The new editions of all the texts in this series should make it easier for teachers to match their teaching to the new modular specification.They act as a global sunscreen, preventing much of the Suna#39;s harmful radiation from reaching the Earth. ... High up, in the stratosphere, ozone protects us by absorbing harmful ultraviolet radiation; however, lower down, in the troposphere, anbsp;...
|Publisher||:||Heinemann - 2000|