Catabolic reactions are reactions that break larger molecules down into smaller molecules, and often result in the release of energy as a by product of the bonds being broken. In fact, metabolism (the breakdown of food) is a catabolic reaction.
So the best answer would be the Answer no.4:
A => B + C + Energy
Humans are connected to life because we are living things such as plants, animals, and technically, we are animals since we are mammals. We are also breathing creatures. (Hope this helps! ~Pooch ♥)
Answer:
Blood transports <em>oxygen</em> from the lungs to all cells of the body.
Explanation:
In the circulatory system , a person breaths in air which is then filtered for oxygen an d the rest of the components are discarded through exhaling .
The oxygen is then taken in by air sacks which later combines blood with oxygen , so hemoglobin which is a blood component takes it to form oxyhemoglobin , which runs through the blood vessels , to the cells for consumption .
The cells will then deposit the deoxygenated blood which returns back tot he heart and then lungs for oxygenation .