Although, it's not just food that they're after. 然而 它们却不只是为食物而来
They know that any sustained movement can give them away. 他们知道持续移动会暴露行踪
but only for those that can reach it. 只看谁能捷足先登
The rain that a grassland needs to survive for a year 草原生长所需的年降雨量
that they're built for a life on the move. 预示着它们一生都将奔波在路上
That is the way things are on grasslands across the planet. 地球上的草原都是如此
that affects every creature that lives here. 从而影响着栖息在这里的所有生命
that have evolved over millions of years. 非凡多样的生存策略
Unfortunately, Namaqua chameleons know that on foggy mornings, 不幸的是 纳米比亚变色龙知道在薄雾弥漫的早晨