We run, play, work, study. we need energy to do all of this. in fact, one characteristic of living things is that they need and use energy. two processes are needed in us humans to break down food to release the energy that is stored in our food. they are and cellular respiration.

The correct answer is B

Explanation:Digestion is the process whereby complex food substances taken into the body is broken down into simple, soluble and absorbable form so that the body can use.

As the digested food is absorbed into the bloodstream, the cells break down this digested food with or without the use of oxygen to release energy. This process is termed as internal respiration.

Digestion

Explanation:

Digestion is the process by which the complex food is broken down into simpler molecules in order to derive energy from them.

The molecules then reach mitochondria where the glucose gets converted into carbon and water in the presence of oxygen and the energy is produced in the form of adenosine triphosphate.

This energy is used in the body in the various types of processes that takes place in the body of the organism.

the answer is d: NaOH + H2 -> Na + H2O. h2o is water. h2o is one of the most recognizable names for water.