【探索世界】浩瀚沙漠(10/30)
Hints: Nara porcupine hairy-footed gerbil rodent provision lean partial to thirst-quenching Namib African
Nara melons have a tough outer shell, but the porcupines' large incisors make short work of them. Like elephants, porcupines help the Nara to spread its seeds. By opening up fruits, they also create opportunities for other dune creatures. Hairy-footed gerbils are hot on their heels. In the cool of the desert night, these little rodents burn up energy quickly, and so must gather food fast. Though plentiful, the Nara seeds take some plucking. The gerbils provision for leaner times ahead, but they must also keep alert. Cave foxes patrol the Nara bushes, looking for gerbils. Surprisingly, the foxes are also partial to the thirst-quenching melons. But there is a great mystery here. This is the most extreme African environment,it may not rain for ten years at a stretch. So how does the Namib support so much life?
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