Please note: This facility is no long being updated
Looking for something specific to go with the course you teach or are studying? Use this tool to help you match up your course requirements to resources on BEEP.
Find a topic - Choose: Awarding Body >> Subject >> Specification Ref >> Topic List
Step 4) Choose a topic to view
OCR - A level AS/A Biology
| Specification Ref.
| Brief description
| Full Details
| Topics found
|
| 5.7.2 | Pollution | (a) describe the causes and effects of eutrophication. (c) appreciate the need for pesticides and explain the consequences of pollution by DDT. (d) outline the sources of polychlorinated biphenyls (PCBs) and heavy metals and the consequences of their release on the environment. (e) explain the production of acid rain and its effects on forest and lakes. (f) outline the roles of carbon dioxide and methane in the enhanced greenhouse effect and global warming. (g) appreciate international efforts to reduce CO2 emissions. (h) define the term indicator species and describe how such species can be used to assess practically the levels of either air or water pollution in a given area. (i) outline how chlorofluorocarbons (CFCs) damage the ozone layer and the problems which result. (j) summarise the international agreement reached on the production of CFCs. | 11 |
Below are links to the topics we have that relate to this specification reference point.
Print Friendly Page