The process of selection or any form of natural pressure onto environments causing change surely is visible on this planet in more areas than just the animal kingdom. It's not confined just to species in my opinion, but the definition of 'evolution' itself is rather specifically thought for species....

You should try to explain why you think something complex or complicated must be designed though, as that makes no sense at all. There's no need for a designer when one can easily see how a chain reaction of evolution through many many years had the results we all can see now.