Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

High pO₂, low pCO₂, low temperature are favorable the formation of oxyhaemoglobin.

• Oxyhemoglobin formation is favored when the pO₂ is high. In areas of the body where oxygen is abundant, such as the lungs, hemoglobin binds oxygen readily. Hemoglobin has a higher affinity for oxygen when the pO₂ is elevated, allowing it to bind with oxygen molecules to form oxyhemoglobin. 
• Low pCO2 levels also promote the formation of oxyhemoglobin. Hemoglobin's affinity for oxygen increases as pCO₂ decreases. In the lungs, where pCO2 is low due to exhalation of carbon dioxide, hemoglobin is more likely to bind with oxygen. At tissues, pCO₂ is high, enabling the supply of oxygen to tissues (dissociation).
• Lower temperatures generally enhance the binding of oxygen to hemoglobin. High temperature at tissues due to metabolic reactions favour the dissociation of oxyhaemoglobin.