In evolutionary terms, can we say which among bacteria, spiders, fish and chimpanzees have a ‘better’ body design? Why or why not?

Environmental demands and pressure have an effect on how organs are designed. As a result, we cannot draw the conclusion that one organism has a better body than another. For example, because it is best adapted for an aquatic environment, fish have evolved a streamlined shape. A spider or chimpanzee, on the other hand, might not be able to thrive in such aquatic conditions.