Relier Pairs the three vital functionsVersion en ligne tienes que relacionar la definición con sus nombres es muy fácil par José Antonio Fernández Martín 1 the digestive system 2 the respiratory system 3 the circulatory system 4 the excretory system breaks down the food we eat into smaller that our body can absorb eliminates the waste that our body can produce absorb oxygen from the air and releases carbon dioxide transport blood all over the body