搜索结果: 1-4 共查到“植物学 ancient”相关记录4条 . 查询时间(0.078 秒)
Ancient bones point to shifting grassland species as climate changes
Ancient bones shifting grassland species climate changes
2016/4/13
More rainfall during the growing season may have led to one of the most significant changes in the Earth’s vegetation in the distant past, and similar climate changes could affect the distribution of ...
Ancient gene network helps plants adapt to their environments
Ancient gene network plants environments
2016/2/23
The only constant is change. In evolution, there are, however, some exceptions. While the enormous diversity of life suggests that organisms are constantly being refitted with new or modified parts, m...
Scientists discover ancient safety valve linking pollen to bacteria
Scientists ancient safety valve pollen to bacteria
2015/11/12
Like seeds, pollen loses most of its water during maturation, entering a state of suspended animation. This allows it to survive its journey from male to female organs of a flower, where it is rehydra...
Researchers discover new wrinkle in ancient ocean chemistry（图）
new wrinkle ancient ocean chemistry
2009/12/23
Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE), the oxygen sp...