01 / 3 · TED-Ed
They investigated differences in pupillary light reflexes, or how the pupil automatically constricts in response to light.
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Spoken in 3 clips from 3 channels · A2–C1 · other forms: reflexesShare
First we start with simple reflexes and soon after we develop our first habits.
Paradichlorobenzene is a little less toxic, causing eye or throat irritation when it’s first inhaled, but also ultimately ends up damaging your blood cells, liver, kidneys, and sometimes central nervous system, leading to weakness, slow reflexes, trembling or slurred speech.
Hearish brings a word back in new clips, from new speakers, until it sticks. Save this one and start with it.