To figure out these counterintuitive findings, the researchers conducted an experiment in a hotel room. They rounded up some lizards, gave them a perch, and used a leaf blower to mimic the effects of high winds. They set up a net to catch any lizards that lost their grip. As the artificial wind blew, the lizards moved so the perch took most of the air flow. But their hind legs would stick out, and if those rear limbs stuck out too far, they acted as sails. “Eventually those back legs were blown off the perch, and the lizards were just holding on with their front two legs. And they could only hold on like that for so long as the wind speed increased further and further, until eventually they were blown off the perch and into the nets So shorter back legs gave a survival advantage. A trait that might be passed on to the next lizard generation.

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Mandy C. Brandt

Thanks for sharing a test for PTE test. This test improves your language knowledge.