(1)科学家发现,越往寒冷地区,鸟蛋颜色种类越少,颜色越深。这是因为深颜色的鸟蛋会吸收更多的
(2)科学家推测,野生鸟类的鸟蛋颜色与花纹是逐渐演化形成的。现如今,树林里筑巢鸟类的鸟蛋颜色多呈绿色或蓝色,这与树林里的环境色调相接近,有利于鸟蛋
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2