The energy of the sun is produced in its

D.attorney because an attorney can in this situation

He introduced the separation of religion and government 

When the indian plate collided with eurasian plate because it was cool 

1. why do astronomers think that there may be other advanced civilizations?
because  it was discovered that there are other planets like earth out there, able to  accommodate life forms.
2. what technologies are astronomers using to look for life on other planets? why?  
they  have used radio telescopes, but now they use laser telescopes   to track laser communications.