Complete the sentences with the words below.

Write one or two words in each gap.

breeding ground, treasure, whales, endangered species

People spend a lot of money to protect many [ ] that are on the brink of extinction.

These animals always return to the same [ ].

When they opened up the tomb, they found the [ ] they had never seen before.

The topic of my presentation is [ ]. I will give you some information about these amazing marine mammals.