Answer;
-By using energy
-Living things carry out the chemical activities of life by using ENERGY.
Explanation;
-Chemical reactions keeps an organism alive; these reactions can take place only when the conditions are exactly right.
-Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is called metabolism. Metabolism includes both exothermic (energy-releasing) chemical reactions and endothermic (energy-absorbing) chemical reactions.
-Chemical reactions occur in all cells, they are fundamental to cell functions, and also essential to maintain the chemical and physical organization of living systems. All living organisms engage in metabolic processes that take place inside their cells.
