Nghe TOEFL

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Listen to part of a lecture in a biology class. The professor is discussing the behavior of honeybees. Professor: Today we're going to talk about how honeybees communicate. You might know that bees perform what's called a waggle dance. But what exactly does that dance tell other bees? Well, recent research has shown that the dance conveys information about the direction and distance of a food source. In the dance, the bee moves in a figure-eight pattern, and the straight part of the dance, where the bee waggles its abdomen, points in the direction of the food relative to the sun. The duration of the waggle run indicates the distance. Now, interestingly, the accuracy of this information can vary. Some studies suggest that the dance is not always perfectly precise. For example, if the food source is very close, the dance may be shorter and less detailed, so other bees might spend time searching in a general area rather than going directly to the exact spot. This trade-off between speed and accuracy is a key area of ongoing research. So, the waggle dance is not just a simple signal; it's a sophisticated system that balances efficiency and precision.