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他不是有competitive advantage然后成为了dominance嘛?说明他确实有影响其他植物呀,为啥选B(没影响呢)
另外这片文章是不是说,食草恐龙invent了flowering plant。因为他比其他植物低,后来的Cretaceous恐龙就吃它并把他吃得很短(near ground),但flowering plant生长繁殖很快,就恢复了并成为主导植物。但是有人说是因为有些恐龙不吃它,所以他存留下来。另外也不一定发生在Cretaceous
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