Answer:
1. The wolf disappears as a result of the sunlight
2. The elephant is hunted because of its trunk
3. The crocodiles are killed due to the danger they possess
4. The whales are found dead because of the activities of fishermen
5. The tigers are in danger as a result of the fire which broke up in the forest
6. The snakes are caught because of the beautiful skins
7. The rivers become dead as a result of the activities of humans, animals and factories
