A Month of Thankfulness: Day Nineteen - Biology

I am thankful for Biology.  I am thankful for the intricate workings of the human body.  I am thankful for the wonders of creation.  I am thankful for the citric acid cycle and for glycolysis.  I am thankful for the cell cycle and for DNA replication.  I am thankful for Genetics and the patterns of evolution.  I am thankful for the study of life and for the passion it instills in me.  I am thankful for immune systems and for muscles, ligaments and joints.  I am thankful for Biology.