The power to override a presidential veto

https://openstax.org/details/books/american-government-3e
Use the Constitution to answer the following questions.

The Constitution requires a simple majority for some actions and a super-majority for others. When asked, explain what level of approval is required. If a supermajority is required, explain the threshold (e.g., 2/3, 3/5, 3/4, etc.).

1. What bodies have the power to override a presidential veto?
2. What margin is required to override a veto?
3. Who has the ability to create treaties?
4. What body has the power to ratify treaties?
5. What margin is required to ratify treaties?
6. What body has the power to impeach a governmental official?
7. What body has the power to convict an official of impeachment charges?
8. What margin is required to impeach? And convict?
9. What body has the power to accept or reject the president’s nomination to the Supreme Court?
10. What margin is required to seat a presidential nomination?