Complete the sentences with the words in the box. leak, government, waves, organisation, smog, chemicals, cause, experiment 1. we're going to do a(n) in my science class this afternoon. 2. i believe that all this is caused by car fumes. 3. from factory waste have polluted the river. 4. the factory was closed and the workers were sent home because there was a gas 5. the sea was quite rough and the were dangerous. 6. it is essential that the takes measures to stop the pollution of our rivers. 7. the main of the problem is the tons of toxic waste polluting the lake. 8. my father works for a(n) that protects marine life.
