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Question: What are the building-blocks of protein? What is the name of the Precambrian Shield in North America? What are rocks called that consist of alternating bands of iron and chert? What type of organism packages its DNA in nuclei? What is the group of organisms containing the first multicellular eukaryotes called? What is a very stable mineral often used to date Precambrian rocks?
The building-blocks of protein are amino acids. The Precambrian Shield in North America is called the Canadian Shield. Rocks that consist of alternating bands of iron and chert are called banded iron formations. Organisms that package their DNA in nuclei are eukaryotes. The group of organisms containing the first multicellular eukaryotes is called the Metazoa. A very stable mineral often used to date Precambrian rocks is zircon.
Jan. 6, 2023, 7:16 a.m.
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