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evanwall91
04.11.2020 •
Biology
How many injections do cattle receive upon arriving at the feedlot?
Seven injections within 48 hours
Three injections within 12 hours
Seven injections within 72 hours
As many as needed
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Ответ:
D. The elements have the same number of valence electrons in the outermost shell.
they are all in group 2 , alkali earth metals , so have 2 electrons in their outer shell :)