A good example is the decreasing effectiveness of simple diffusion as a mechanism of transport of gases, food, and wastes in larger animals, requiring specialized circulatory, respiratory, digestive, and excretory systems.
(A good example; is; the decreasing effectiveness of simple diffusion as a mechanism of transport of gases, food, and wastes in larger animals) (wastes in larger animals; requiring; specialized circulatory, respiratory, digestive, and excretory systems)
A good example wastes in larger animals
is requiring
the decreasing effectiveness of simple diffusion as a mechanism of transport of gases, food, and wastes in larger animals
specialized circulatory, respiratory, digestive, and excretory systems