既然生活在沙漠，必然有活下來的優(yōu)勢，這是大自然優(yōu)勝劣汰的必然產(chǎn)物。 Hints: Namib Gemsbok trek dune quickstep avalanche

Pinning the ants to the hot sand surface, the spiders first cook them to death before dragging them under. In the Namib, even the toughest animals struggle with the heat. Gemsbok trek to the crests of the highest dunes to seek relief in the breeze. With no cloud cover, solar radiation blasting the desert is intense. The mid-day sand is so hot. It's like a bed of burning coals. The Namib quickstep. Over millions of years, you learn to keep your claws cool. Pushed by the wind, the dunes avalanche. The Namib's residents can't fight the tide.

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