Thank you sir.
Explanation:
you might be sick or even had worked late and the boss decides to give you a day off. Therefore It is nice to thank him
It depends what kind of activist we are talking about. If the activist was for human rights, we could possibly consider them as a humanitarian, because the definition for humanitarian is: concerned with or seeking to promote human welfare. This is quite similar to a human rights activist, so I would say yes.
Answer:A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.
Explanation:
Hope that helps!
