would we be able to survive if an asteroid hit earth?

Question: would we be able to survive if an asteroid hit earth?
- Keywords:
  asteroid,
  earth,
  hit
Asked by mylittlebirdxox to Carla, Madgie, Nick, Vicky, Werner on 12 Nov 2013.
- Werner Muller answered on 12 Nov 2013:
  
  It all depends on the size of the asteroid. If we are hit by an object that wiped out the dinosaurs it might be getting close. I imagine that already now some of us can survive in extreme conditions so there is a good chance that some would survive if a big asteroid hits the earth.

Question: would we be able to survive if an asteroid hit earth?