What evidence exists that non-verbal behaviour is innate? (3 marks)

Evidence that non-verbal behaviour is innate

Facial expressions should therefore be the same across all cultures and research evidence suggests expressions for anger, disgust, happiness, sadness, fear and surprise are universally recognised by most cultures throughout the world.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.