If the Earth got warmer, the sea level might rise.
If the water pollution continued, fish could die.
If the human still littered, there might be more soil pollution.
Were you see a person is littering, what would you do?
If I were you, I would ask the person who's littering to put the litter into the bin.
If I saw a bottle on the road, I could put it into the recycling bin.
Were you see a paper on the floor, would you throw it away?
I saw a person threw a can to the top of the tree, if you were I, what would you do?
If the noise pollution continued, people might have sleeping problems.
If it was more deforestation, there might be more flood.
If it was air pollution, people might have breathing problems.
