How many bumble bees are left in the world?

Related questions

1. Can we survive without bumblebees?
2. Do bumble bees have a queen?
3. Are bumble bees male or female?
4. Is it aerodynamically impossible for a bumblebee to fly?
5. How aggressive are bumblebees?
6. Which is the biggest bee?
7. Can you keep a bumblebee as a pet?
8. Do bumblebees make honey?
9. Are all bumblebees endangered?
10. Are bumble bees friendly?

Tags

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6. #catch
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8. #correctly
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10. #world
11. #estimates
12. #colonies
13. #feral
14. #trillion
15. #between
16. #about
17. #alone
18. #honeybees