Essay 1
Question a The relationship between size and complexity has been studied extensively in Biology. Of particular interest is the association between surface area and volume. As animals increase in size, their exchanges with the environment become more difficult. For example, large animals require special organs (such the heart, the liver and the kidney) to facilitate movement of nutrients and air circulation. In order to reduce this problem, several organisms (such as Porifera, Cnidaria, and Platyhelminthes) have adapted by increasing their surface area to volume ratio. The increased surface are to volume ratio simplifies processes such as respiration because the ...
