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Major group of flowering plants is evolving twice as quickly in temperate zones as in the tropics（图）
Major group flowering plants evolving twice quickly temperate zones tropics
2020/7/10
In a surprise twist, a major group of flowering plants is evolving twice as quickly in temperate zones as in the tropics. The finding runs counter to a long-held hypothesis that tropical regions, home...
A Spectroscopic Study of DD UMa: Ursa Major Group Member and Candidate for BRITE
individual: DD UMa stars: abundances – technique: spectroscopic
2011/10/19
The Ursa Major group is a nearby stellar supercluster which, while not gravitationally bound, is defined by co-moving members. DD UMa is a $\delta$ Scuti star whose membership in the Ursa Major group ...