What are collective nouns for groups of animals, objects, and people? Also, identify the material of the glasses.

Here are the answers to the questions:

3. A number of bees: Swarm
4. A number of wolves: Pack
5. A number of dancers: Troupe
6. A number of puppies: Litter
7. A number of players: Team
8. A collection of books: Library
9. A number of trees: Forest
10. A number of sailors: Crew

For the picture-based question:

1. What are the glasses made of? Glass