The cardiovascular and immune
Characteristics shared by members of a group may include interests, values, representations, ethnic or social background, and kinship ties. (Sorry this is late) just saw this now.
Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobic respiration. It has four stages known as glycolysis, Link reaction, the Krebs cycle, and the electron transport chain. yup
I would say down wind side but I'm not 100% sure