1. This problem is as serious as saving the **rainforest**.
2. The **population** of honey bees today is far lower than it used to be.
3. Bees and other insects help our **crops** to grow in the fields.
4. Some people say that the bluefin tuna is one of the tastiest living **creatures** in the sea.
5. Well, this large fish is also **endangered**, probably more so.
6. The balance of the ocean **environment** will be damaged forever.
7. This is all due to the actions of **humans**.
8. Besides **hunting**, tigers are facing another challenge.
9. The **habitat** where they live is changing, as more and more trees are cut down.
10. The areas of **landscape** are getting smaller.
11. Their **population** is decreasing all the time.