Answer:
excretory system and circulatory system
Explanation:
Blood is part of circulatory system and as it move through various organs it exchanges the gases i.e give oxygen to the cell and take carbon dioxide from them. After taking CO2, the blood becomes impure and hence it passes through the kidney before going to the heart. Kidney is part of excretory system which removes carbon dioxide from blood and thus purifies it.
Wind and water take the heat away and it makes it cold! Hope this helps if I'm wrong I'm sorry
A chemical process that occurs when a living organism converts food to energy to run certain cellular processes. This is essential for an living organism in order to maintain life.
This syndrome affects the nervous system
this syndrome is a rare disorder characterized by mental disability toward nervous type movement, caused by the absence of certain genes normally present copy of chromosomes 15 inherited from the mother