1. Where did pterosaurs live?
In the air.
2. Could sauropods swim?
No, the couldn't.
Could pterosaurs swim?
Yes, they could.
3. Could sauropods fly?
No, the couldn't.
Could pterosaurs fly?
Yes, they could.
4. How many legs did sauropods have?
Four.
How many legs did pterosaurs have?
Two.
5. What did sauropods eat?
Plants.
What did pterosaurs eat?
Fish and sometimes insects.