Across
- 4. if you know sth. well in advance
- 6. the.....of carbon dioxide into the air contributes to global warming
Down
- 1. syn for susceptible
- 2. a system of electric wires or pipes carrying gas, for sending power over a large area
- 3. a substance that pollutes sth, especially air and water
- 5. the outer edge of an area or a group
- 7. a place, person or thing that you get sth. from