if the earth was created by planets crashing into eachother, what created people?

Question: if the earth was created by planets crashing into eachother, what created people?

Asked by daiiseyy to Laura, Lily, Mark, Paul, Sarah on 21 Jun 2010 in Categories: General. This question was also asked by erandavitija, hlh606.
- Paul Roche answered on 18 Jun 2010:
  
  I think the general idea is that life evolved from a complex mixture of chemicals and energy (sunlight, lightning) – many of the chemicals were brought to Earth by impacts from comets (e.g. water) and asteroids, so it’s odd that these very early impacts brought the “building blocks” of life, whereas later on giant impacts made much of life extinct (e.g. the dinosaur extinction 65 million years ago).
  
  So impacts probably helped start life on Earth, but also contribute to wiping lots of it out later…
- Laura Maliszewski answered on 18 Jun 2010:
  
  Molecules crashing into each other!
  
  The best theories think that chemicals started combining randomly until they could self-replicate. A few eons later, something like life appeared!
- Lily Asquith answered on 19 Jun 2010:
  
  People and all other living things evolved from single-celled organisms.
  
  We don’t know how they came to into being. But the thing to remember is that these cells were *made of atoms*, it’s just the atoms in them (and us) are configured in a slightly different way from the atoms in a biscuit or a rock.
- Mark Roberts answered on 21 Jun 2010:
  
  What created people – hmmm that is something that is really open to debate at the moment
  
  One of the ‘accepted’ theories is the RNA world hypothesis – this is the idea that on early earth there was just a pool of chemicals – some of which gained the ability to self replicate – as they did you started getting competition (evolution) – ie: different self replicating molcules competed to be the one with the most.
  
  This competition bred complexity – membranes surrounding them eg – which then formed the first cells. Again you got competition and survival of the fittest (evolution) which resulted in more complex organisms being formed and hence us!
  
  That is a very quick summary – hope that answers your qu!
- Sarah Bardsley answered on 21 Jun 2010:
  
  Evidence shows that humans evolved from apes. And that everything evolved from single celled organisms which in turn evolved from chemicals. Although there are competing theories, most agree it was a particular set of circumstances and incredibly lucky.

Question: if the earth was created by planets crashing into eachother, what created people?

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