1. If teachers teach environmental issues at school, students will be more aware of protecting the environment.

2. If light pollution happens, animals will change their behaviour patterns.

3. If the levels of radioactive pollution decrease, we will switch from nuclear power to renewable energy sources.

4. If the water temperature increases, some aquatic creatures will be unable to reproduces. 

5. If the water is contaminated, people will get more diseases.

1.if  teachers teach environmental issues at school , students will be aware of protecting the environment

2.if light pollution happens, Animals will change their behaviour patterns.

3. if We switch from nuclear power to renewable energy sources, The levels of radioactive pollution will decrease

4.if The water temperature increases, Some aquatic creatures will be unable to reproduces.

5. if The water is contaminated, People will get more diseases