Complete the sentences using "if" and "when" 1. If pollution ( to distrub) the balance in nature all living things (not

 1. If pollution disturbs the balance in nature, all living things will not live in harmony. 2. If the air and the water are polluted, many species of plants and animals will disappear. 3. We will put up a tent when we go to the camp. 4. When we go camping we will never make campfires. 5. If we do not pay attention to pollution, our Earth will not be safe to live in.