An ecosystem contains two types of giraffes, some with short necks and others with long necks. the distribution of this trait is equal among the population. a disease causes low-lying shrubs to die out. the long-necked giraffes can access more food, so they have a better chance of surviving to reproductive age. after several generations, all the giraffes ha

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction

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