Top Ten Powerful Nations 2013 (According to Global Presence). Top Ten Powerful Countries Ranking (2012). NOTE: National Power Index (NPI) 2012 is a comprehensively revised version of the previous National Security Indexes published in Indiaâs National Security Annual Review (INSAR) series since 2002.op Ten Powerful Nations 2013 (According to Global Presence). Top Ten Powerful Countries Ranking (2012). NOTE: National Power Index (NPI) 2012 is a comprehensively revised version of the previous National Security Indexes published in Indiaâs National Security Annual Review (INSAR) series since 2002.
Overview. When you take in food, it's the job of your digestive tract to break that food down into smaller pieces through mechanical digestion, and then break larger molecules into smaller ones through chemical digestion.
About Digestive Enzymes. Digestive enzymes are chemicals produced by our bodies in the pancreas, small intestine, salivary glands and stomach. When we eat food, our digestive system requires the food to be broken down into nutrients before absorption can occur.igestive enzymes are chemicals produced by our bodies in the pancreas, small intestine, salivary glands and stomach. When we eat food, our digestive system requires the food to be broken down into nutrients before absorption can occur.