How did they develop?

I think they evolved together.

I think these evolved I have very little time left

In other words, men, you might want to pick it up a notch in the domestic department.

It might be cancer, they're actually pretty good now about doing colonoscopy.

Australia is a continent that broke off from the other continents and it evolved very rapidly because it diverged from the evolutionary tree.

Though it may have been small, if the population that was driven out had developed normally, it would now represent almost the entire population.

So if humans evolved as runners, if that's our one natural advantage, why are we so bad at it? Why do we keep getting hurt?

So if humans evolved as runners, if that's our one natural advantage, then why are we so bad at it?