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  1. Yes, even though they never have to write term papers or worry about paying their bills on time, plants can be stressed. They’re widely known to change their color, smell, or shape in response to stress, and recent research (though not yet peer-reviewed) suggests that they even let out their own kind of “screams” in the face of it. Relatable.

    Conditions that can put a plant under pressure include drought, snipped stems, disease, excess levels of salt, and uncomfortable weather conditions. To capture their ultrasonic screeches, researchers out of Tel Aviv University put microphones up to stressed tomato and tobacco plants. The researchers suggest that the squeals are a result of air bubbles popping within the plants, and although they’re too high pitched for humans to hear, they think insects might be able to hear them.

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