Regardless of its shape, a given orbital may contain no more than:

A. 1 electron.
B. 4 electrons.
C. 8 electrons.
D. 2 electrons.

D. 2 electrons.

Biology & Microbiology

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Humans can alter their environment, sometimes drastically, and this can lead to an increase in which of the following?

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The placenta is normally located in the 

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©McGraw-Hill EducationBased on the phylogeny shown, which characteristic is homoplastic?

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