_____ change the balance of nature,we must not hunt the wild

_____ change the balance of nature,we must not hunt the wild we should k_ the balance of nature we must keep the balance of ( ).(自然界) upset the balance of nature We think it important to keep the balance of nature 英语作文“keep the Balance of Nature” It is important that we should keep the balance of nature改为简 We must change our according to the __________state of affai man is being punished for breaking the balance of nature. Once the balance of nature is disturbed,it is. the nature of balance is upset还是 upseted? why the balance of payment is change the exchange rate