Question

Which life processes are essential for the production of energy required by the body?

Answer 1

The body needs energy, which comes from the food we eat. Once our body absorbs this food, it must be broken down using oxygen. The respiratory system brings this oxygen into our body, and the circulatory system carries it through the blood to every single cell. Inside the cells, this oxygen helps release energy from the food. Therefore, nutrition, respiration, and circulation are the three main life processes that work together to produce the energy our body needs to stay alive.