蝴蝶会因花朵的颜色而选择性地吸食花蜜吗?要做出假设,写出实验过程以及控制变量.原文如下:Design an experiment that would determine if butterflies are selective in which they visit on the color of the flower.State
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蝴蝶会因花朵的颜色而选择性地吸食花蜜吗?要做出假设,写出实验过程以及控制变量.原文如下:Design an experiment that would determine if butterflies are selective in which they visit on the color of the flower.State
蝴蝶会因花朵的颜色而选择性地吸食花蜜吗?
要做出假设,写出实验过程以及控制变量.
原文如下:
Design an experiment that would determine if butterflies are selective in which they visit on the color of the flower.State your hypothesis,procedure,and comment on how you are limiting variables and providing for a control.
蝴蝶会因花朵的颜色而选择性地吸食花蜜吗?要做出假设,写出实验过程以及控制变量.原文如下:Design an experiment that would determine if butterflies are selective in which they visit on the color of the flower.State
事实上通过花中的紫外线吸引蝴蝶.
蝴蝶并不能分辨颜色,它只能分辨出紫外线的强弱.花朵就是通过花瓣中的紫外线吸引蝴蝶.在蝴蝶的眼里,大部分的视野都是深色的(紫外线弱),而花朵却格外的明亮(紫外线强),于是蝴蝶就被吸引过来.