Read the text and choose the correct answer

Based on the provided text, here are the answers to the questions:

1. **What did scientists use to record Yasha and Yana’s conversations?**
- **Underwater microphone**

2. **As well as changing how often they ‘click’, what else do dolphins change about their ‘clicks’ to help them communicate?**
- **Sound frequency**

3. **What are the researchers in Ukraine unable to understand about Yasha and Yana’s conversations?**
- **Meaning of clicks**

4. **What form of communication do scientists believe dolphins use when they communicate with their flippers?**
- **Body language**

5. **What type of instruction were both Pheonix and Ale able to follow in Louis Herman’s research?**
- **Commands correctly**