Combine two sentences with which or who.1. There are a lot

Combine two sentences with which or who.
1. There are a lot of rare animals at London Zoo. The Zoo is famous for its rare animals.
2. More than half of the world's species of plants and animals are in the rainforests. They grow in South America and Asia.
3. Many rare birds live on small islands. The islands are situated in the Atlantic Ocean.
4. Take this book about endangered animals. It was written by W. Sting. He is a famous vet.
5. Have you seen these photos of the polar bear? I know the photographer. He works for the magazine "Animal World".
6. It's a shame that people kill crocodiles for their skin. The skin is used for making shoes, belts, bags and other things.