99 pts if answered connection academy 1.the process in which an animal's cells use oxygen and digested food molecules to release the energy in food is called ? a. breathing b. cellular respiration c. diffusion d. gas exchange 2.the body system responsible for the exchange of gases between the body and the environment is the? a. digestive system b. respiratory system c. circulatory system d. excretory system 3.which of the following body system work together to get cells the nutrients they need to carry out cellular respiration? a. the digestive and respiratory systems b. the respiratory and circulatory systems c. the digestive and circulatory systems d. the circulatory and excretory systems 4.which of the following body systems work together to get cells the oxygen they need to carry out cellular respiration ? a. the digestive and respiratory systems b. the respiratory and circulatory systems c. the digestive and circulatory systems d. the circulatory and excretory systems 5.which of the following body systems work together to remove the waste products of cellular respiration from cells ? a. the digestive and respiratory systems b. the respiratory and circulatory systems c. the digestive and circulatory systems d. the circulatory and excretory systems answer all of them to get 99 pts if not or wrong you don't u