In Afghanistan, the US-led international force still occupies more than 450 bases. In total, the US military has some form of troop presence in approximately 150 foreign countries, not to mention 11 aircraft carrier task forcesâessentially floating basesâand a significant, and growing, military presence in space.
Metabolism is the set of chemical reactions that occur in living organisms in order to maintain life. These processes allow organisms to grow and reproduce, maintain their structures, and respond to their environments.
metabolism. 1  Biology, Physiology. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. 2  any basic process of organic functioning or operating: changes in the country's economic metabolism.