Complete the sentences using "if" and "when" 1. If pollution ( to distrub) the balance in nature all living things (not to live) in harmony. 2. If the air and the water are polluted. Many species of plants and animals ( to disa...

Complete the sentences using "if" and "when" 1. If pollution ( to distrub) the balance in nature all living things (not to live) in harmony. 2. If the air and the water are polluted. Many species of plants and animals ( to disappear ) 3. We ( to put) up a tent when we (to go) to the camp 4. When we (to go) camping we never ( to make) campfires. 5. If we (not to pay) attention to pollution, our Earth (not to be safe) to live in. HELP ME PLS!!!!