Whether you practice the faith of evolution or not, you must agree that the answer is great design. The article linked to the picture below describes the design concepts that allowed sauropod dinosaurs to grow so big.
The question is did this design, along with thousands and thousands of other examples of complex design, come about at random or were they created by an intelligent designer through genetic programming? Observable science makes the answer very clear.
Click the image below to read a scientific article to support this statement.
I'm busy working on my blog posts. Watch this space!