What if the asteroid that killed all the dinosaur was a UFO and we are the Aliens

Explanation:

When it collided with Earth around 66 million years ago, it was tens of miles broad and forever impacted history.

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.

1. where does the energy of a nuclear power plant come from?

d) political bosses should not hold office