The rDNA sequences of which organisms branch nearest the root of the archaean tree? Choose one: A. Crenarchaeota B. Euryarchaeota C. Thaumarchaeota D. Ancient Archaeal Group

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explanation:

i still can't find this

satellites are frequently used to make observations of the orbit on earth

the fossil record provides evidence of a common ancestor to many species.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.