Coevolution
When two or more species evolve together, we (“we” as in biology dorks) call it coevolution–the same way that two or more people working together are called coworkers, and the way that two people that are awesome together are called cobadasses. All the same. It could not be more clear.
For coevolution to be coevolution (and not just two species hanging out whilst they evolve) the species have to influence each other’s evolutionary journeys.
See, this is just polite interest in another species’ evolution. They are not affecting each other’s progress in the slightest. They’re really just wasting time. It’s actually kind of pathetic. Get a life, trees.
But rather than bore you with definitions and examples of what isn’t coevolution, I’ll give you an example of what is. The best example I know: bees and flowers.
But before I get into that, here’s a rare glimpse into my creative process:
Flowering plants are a relatively recent evolutionary invention. They started to evolve around 140 million years ago, and really started being super awesome and flowery just 60 million years ago. Okay, it sounds like a long time, but it’s only 3% of earth’s history.