Diversity of Animal and Living World

<p>Biology is the science of life and living processes. The living world comprises an amazing diversity of living organisms. However living organisms show &lsquo;Fundamental Similarity&rsquo; in many respects. The study of &lsquo;Life&rsquo; involves a multidisciplinary approach involving many of the principles of chemistry physics and mathematics too at some places. Biological systems are the most &lsquo;complex chemical systems&rsquo; on the Earth. The bodies of early organisms are at the &lsquo;cellular&rsquo; level. However large an organism is &lsquo;cells&rsquo; of an organism are the &lsquo;Basic Units&rsquo; of &lsquo;structure&rsquo; and &lsquo;function&rsquo;. Organisms constantly interact with their surrounding environment &lsquo;exchanging energy&rsquo; and &lsquo;recycling minerals&rsquo;. The intricate chemical processes of cells are based on the basic principles of chemistry. Every level of biological organisation involves &lsquo;energy transactions&rsquo; governed by the &lsquo;Laws of thermodynamics&rsquo;.&nbsp;</p>