Words in context 1 Rewrite the sentences. Change the words in bold.
endangered becoming extinct species in the wild
prevent population
1 Different types of animal need different enclosures to live in.
Different species need different enclosures to live in.
2 Scientists study animals living in nature to learn about their behaviour.
3 People want to stop animals like the panda from disappearing completely.
4 Many animals are in danger and the number of animals is becoming very small.