How is it possible for humans to read emtions from other humans

An eye tracker is a special device that monitors eye movements and, therefore, can tell scientists exactly where a person is looking. Eye trackers allow scientists to study what regions of the face people pay most attention to (for example, the eyes or the mouth) when they are trying to understand others' emotions.

for question 8

1: it gets the blood pumping more

2: endorphins and other neurotransmitters

because no

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