Rewrite the sentences

1We recycle more. We will be able to protect environment
->If
2.Over fishing will damage marine life. We need to control ít
->If
3. Don't throw garbage into rivers and lakes you'll make them dirty
->If
4. We don't stop polluting thể environment. We get more health problems
->unless
5. We don't have enough food and water. We don't stop water pollution
->unless