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Sunstroke is a life threatening condition caused by overexposure to extreme heat. Also sometimes called heatstroke, this condition occurs when the bodyâs heat control system fails and it cannot lose the excessive heat. High temperatures can cause the bodyâs major organs to fail.unstroke is a life threatening condition caused by overexposure to extreme heat. Also sometimes called heatstroke, this condition occurs when the bodyâs heat control system fails and it cannot lose the excessive heat. High temperatures can cause the bodyâs major organs to fail.
Heliotropism, a form of tropism, is the diurnal motion or seasonal motion of plant parts in response to the direction of the sun. The habit of some plants to move in the direction of the sun was already known by the Ancient Greeks. They named one of those plants after that property Heliotropium, meaning sun turn. The Greeks assumed it to be a passive effect, presumably the loss of fluid on the illuminated side, that did not need further study. Aristotle's logic that plants are passive and immobi