An alien life form would probably assess the earths atmopheric conditions and confirm all of the parameters it may have deduced from further away in space. It would then wait in the spaceship and make a few observations on what threats there might be in terms of other life forms. Once this is done the alien may then slowly venture out, away from its spacecraft.
Not a thing.
An asteroid would hit earth first
Battery or battery cables would be the first thing I would look at.Battery or battery cables would be the first thing I would look at.
Empty, because every moving thing would have died.
every thing would float around.
there would be some asteroids or some thing else in the space would dash the earth.
Unless you count God himself (Genesis 1:1- 'In the beginning, God created the heavens and the earth.... and the spirit of God was hovering over the waters.') the first thing on earth would be water... it was formless and empty, dark and there was no land. The next thing God did make was light, then the sky, and then dry land. After this, he made vegetation, so the first thing on the dry ground of earth would've been plant life.
the first thing they did to survive what? life? I would assume the first thing they did to survive in life would be breathing. perhaps you could be a little more specific :)
There is no living thing that does not age, otherwise it would stay on earth forever.
Best thing would be the first thing anyone else would do: take it to the vet!
The Earth has not been invaded. Any invasion of Earth would have to be from beyond Earth, and would therefore be from space.
Go buy a bugatti