Вопрос по английскому языку:

Use the verbs in brackets in the correct tense for.<br />1.if population (to disturb) the balance in nature all living things(not to live) in harmony. 2.If the air and the water a polluted.Meny species of plants and animals(to disappear) 3.We (to put)up a tent when we(to go)to the camp.<br />4.When we(to go)camping we never(to make) campfires.<br />5. If we (not to pay) attention to pollution, our, Earth (to not be safe)to live in.