Plants contain xylem and phloem tissues for carrying water and food. What organ system in animals performs a similar function as xylem and phloem in plants? Digestive system
Excretory system
Respiratory system
Circulatory system

digestive system may be the answer

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.