Because it’s the longest river in the world
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It is also worthy to note that Mendeleev's 1871 arrangement was related to the atomic ratios in which elements formed oxides, binary compounds with oxygen whereas today's periodic tables are arranged by increasing atomic numbers, that is, the number of protons a particular element contains.
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Answer:true
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Im probably wrong i just need points
A group of living organisms and the abiotic spheres with which they interact.
When species lose their habitats they may go extinct.