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Answer: It is called a botanical wonderland because a very large variety of flowers bloom there, creating a colourful natural landscape during the flowering season.
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Answer: They created durable crossings over waterways where ordinary bamboo or wooden bridges could be damaged by heavy rain and strong water.
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Answer: It is a meteorite-impact crater formed in basaltic rock and contains a saline lake inside its circular depression, making it a rare geological site.
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Answer: The textbook explains that the surrounding slopes and horizon create an optical illusion, making the road’s gradient appear different from what it actually is.
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Answer: The source explains that bioluminescence from a high concentration of micro-planktons makes the water appear to glow at night.
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Answer: They slow the movement of tidal water, help stabilise the coastline and reduce erosion.
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Answer: The sea retreats far from the shore during ebb tide and later returns at high tide, so visitors can watch the water seem to disappear and reappear.